diff --git a/debye_bec/bec_widgets/widgets/client.py b/debye_bec/bec_widgets/widgets/client.py
index c82894c..af97cf7 100644
--- a/debye_bec/bec_widgets/widgets/client.py
+++ b/debye_bec/bec_widgets/widgets/client.py
@@ -4,7 +4,6 @@
 from __future__ import annotations
 
 from bec_lib.logger import bec_logger
-
 from bec_widgets.cli.rpc.rpc_base import RPCBase, rpc_call, rpc_timeout
 
 logger = bec_logger.logger
@@ -15,6 +14,7 @@ logger = bec_logger.logger
 _Widgets = {
     "DataViewer": "DataViewer",
     "DigitalTwin": "DigitalTwin",
+    "ScanControlXAS": "ScanControlXAS",
 }
 
 
@@ -64,3 +64,26 @@ class DigitalTwin(RPCBase):
         """
         Detach the widget from its parent dock widget (if widget is in the dock), making it a floating widget.
         """
+
+
+class ScanControlXAS(RPCBase):
+    _IMPORT_MODULE = "debye_bec.bec_widgets.widgets.scan_control_xas.scan_control_xas"
+
+    @rpc_call
+    def attach(self):
+        """
+        None
+        """
+
+    @rpc_call
+    def detach(self):
+        """
+        Detach the widget from its parent dock widget (if widget is in the dock), making it a floating widget.
+        """
+
+    @rpc_timeout(None)
+    @rpc_call
+    def screenshot(self, file_name: "str | None" = None):
+        """
+        Take a screenshot of the dock area and save it to a file.
+        """
diff --git a/debye_bec/bec_widgets/widgets/designer_plugins.py b/debye_bec/bec_widgets/widgets/designer_plugins.py
index a571172..b098ee3 100644
--- a/debye_bec/bec_widgets/widgets/designer_plugins.py
+++ b/debye_bec/bec_widgets/widgets/designer_plugins.py
@@ -7,6 +7,10 @@ from __future__ import annotations
 designer_plugins = {
     "DataViewer": ("debye_bec.bec_widgets.widgets.data_viewer.data_viewer", "DataViewer"),
     "DigitalTwin": ("debye_bec.bec_widgets.widgets.digital_twin.digital_twin", "DigitalTwin"),
+    "ScanControlXAS": (
+        "debye_bec.bec_widgets.widgets.scan_control_xas.scan_control_xas",
+        "ScanControlXAS",
+    ),
 }
 
-widget_icons = {"DataViewer": "find_in_page", "DigitalTwin": "lightbulb"}
+widget_icons = {"DataViewer": "find_in_page", "DigitalTwin": "lightbulb", "ScanControlXAS": "tune"}
diff --git a/debye_bec/bec_widgets/widgets/digital_twin/digital_twin.py b/debye_bec/bec_widgets/widgets/digital_twin/digital_twin.py
index b8ff05f..f5fcbfe 100644
--- a/debye_bec/bec_widgets/widgets/digital_twin/digital_twin.py
+++ b/debye_bec/bec_widgets/widgets/digital_twin/digital_twin.py
@@ -35,6 +35,7 @@ from qtpy.QtWidgets import (
     QWidget,
 )
 
+from ..edge_selector import EdgeSelector
 from .beamline import get_beamline_id
 from .calculations.calc_positions import calc_positions
 from .calculations.calc_sideview import calc_sideview
@@ -66,6 +67,11 @@ logger = bec_logger.logger
 OFFSET_FILE_X01DA = Path(__file__).with_name("x01da_offsets.yaml")
 OFFSET_FILE_X10DA = Path(__file__).with_name("x10da_offsets.yaml")
 
+X01DA_E_MIN = 4500
+X01DA_E_MAX = 60000
+X10DA_E_MIN = 4500
+X10DA_E_MAX = 35000
+
 
 class DigitalTwin(BECWidget, QWidget):
     """
@@ -140,6 +146,7 @@ class DigitalTwin(BECWidget, QWidget):
         self.setWindowTitle("Digital Twin")
         self.resize(1450, 950)
 
+        self.input.edge_selector.clicked_connect(self.open_edge_selector)
         self.input.energy.value_changed_connect(self.calc_assistant)
         self.input.sldi_hacc.value_changed_connect(self.calc_assistant)
         self.input.sldi_vacc.value_changed_connect(self.calc_assistant)
@@ -162,6 +169,7 @@ class DigitalTwin(BECWidget, QWidget):
         self.settings.load_offsets.clicked_connect(self.load_offsets)
         self.settings.show_offsets.clicked_connect(self.show_offsets)
 
+        self.edge_selector_energy = 0.0
         self.bragg_angle = 0.0
         self.qy = 0.0
         self.offsets = {}
@@ -326,6 +334,7 @@ class DigitalTwin(BECWidget, QWidget):
                 self.calc_fm_ideal_pitch()
                 self.calc_mo1_energy_resolution()
             case "energy":
+                self.update_edge_selected()
                 self.calc_mo1_bragg_angle()
                 self.calc_cm_crit_pitch()
                 self.calc_cm_reflectivity()
@@ -789,6 +798,24 @@ class DigitalTwin(BECWidget, QWidget):
         surfaces = calc_surfaces(config)
         self.surface_plots.update_surfaces(scene="reality", data=surfaces)
 
+    @SafeSlot()
+    def open_edge_selector(self, *_):
+        match self.beamline:
+            case "x01da":
+                dlg = EdgeSelector(self, llim=X01DA_E_MIN, hlim=X01DA_E_MAX)
+            case "x10da":
+                dlg = EdgeSelector(self, llim=X10DA_E_MIN, hlim=X10DA_E_MAX)
+            case _:
+                dlg = EdgeSelector(self)
+        if dlg.exec_():
+            self.input.edge_selected.setText(f"{dlg.selected_element}, {dlg.selected_edge}-edge")
+            self.edge_selector_energy = dlg.selected_energy
+            self.input.energy.set_number(dlg.selected_energy)
+
+    def update_edge_selected(self):
+        if self.input.energy.value() != self.edge_selector_energy:
+            self.input.edge_selected.setText("-")
+
     def calc_mo1_energy_resolution(self):
         """
         Calculates the energy resolution of the monochromator
diff --git a/debye_bec/bec_widgets/widgets/digital_twin/panels/input_panel.py b/debye_bec/bec_widgets/widgets/digital_twin/panels/input_panel.py
index c0ae458..8bebec6 100644
--- a/debye_bec/bec_widgets/widgets/digital_twin/panels/input_panel.py
+++ b/debye_bec/bec_widgets/widgets/digital_twin/panels/input_panel.py
@@ -5,10 +5,17 @@ Panel for user inputs of the digital twin widget
 from typing import Union
 
 # pylint: disable=E0611
-from qtpy.QtWidgets import QVBoxLayout, QWidget
+from qtpy.QtWidgets import QHBoxLayout, QLabel, QPushButton, QVBoxLayout, QWidget
 
 from ..types import BeamlineId
-from ..widgets.qt_widgets import Button, ComboBox, Group, InputNumberField, NumberIndicator
+from ..widgets.qt_widgets import (
+    Button,
+    ComboBox,
+    Group,
+    InputNumberField,
+    NumberIndicator,
+    TextIndicator,
+)
 
 
 class InputPanel(QWidget):
@@ -28,11 +35,28 @@ class InputPanel(QWidget):
         # Adapt to reality
         self.adapt_reality = Button(label_button="Adapt to reality", enabled=True)
 
-        # Energy
+        # edge_selector_layout = QVBoxLayout()
+        # edge_selector_label = QLabel("Absorption edge:")
+        # self.edge_selector_button = QPushButton("Choose")
+        # self.edge_label = QLabel("No edge selected")
+        # edge_selector_layout.addWidget(edge_selector_label)
+        # edge_selector_layout.addWidget(self.edge_label)
+        # edge_selector_layout.addWidget(self.edge_selector_button)
+        # edge_selector_layout.addStretch()
+
+        # Edge selector
+        self.edge_selector = Button("Absorption edge", "Choose", enabled=True)
+
+        # Chosen absorption edge
+        self.edge_selected = TextIndicator("Chosen edge")
+
+        # Direct Energy Input
         self.energy = InputNumberField(
             "energy", "Energy", unit="eV", init=8979, decimals=0, single_step=100, ll=4000, hl=65000
         )
 
+        self.energy_group = Group("Energy", [self.edge_selector, self.edge_selected, self.energy])
+
         # FE Slits Acceptance
         self.sldi_hacc = InputNumberField(
             "h_acc",
@@ -156,7 +180,7 @@ class InputPanel(QWidget):
             "User Input",
             [
                 self.adapt_reality,
-                self.energy,
+                self.energy_group,
                 self.sldi_ass_group,
                 self.cm_ass_group,
                 self.mo1_ass_group,
diff --git a/debye_bec/bec_widgets/widgets/edge_selector.py b/debye_bec/bec_widgets/widgets/edge_selector.py
new file mode 100644
index 0000000..e2d62cc
--- /dev/null
+++ b/debye_bec/bec_widgets/widgets/edge_selector.py
@@ -0,0 +1,287 @@
+"""
+Edge Selector: Custom BEC dialog to select an absorption edge.
+"""
+
+import sys
+
+import xraydb
+from bec_lib import bec_logger
+from bec_widgets.utils.bec_dispatcher import BECDispatcher
+from bec_widgets.utils.colors import apply_theme, get_accent_colors
+from bec_widgets.utils.error_popups import SafeSlot
+
+# pylint: disable=E0611
+from qtpy.QtWidgets import (
+    QApplication,
+    QComboBox,
+    QDialog,
+    QGridLayout,
+    QHBoxLayout,
+    QLabel,
+    QPushButton,
+    QVBoxLayout,
+)
+
+logger = bec_logger.logger
+
+ELEMENTS = {
+    # period 1
+    "H": (1, 1),
+    "He": (1, 18),
+    # period 2
+    "Li": (2, 1),
+    "Be": (2, 2),
+    "B": (2, 13),
+    "C": (2, 14),
+    "N": (2, 15),
+    "O": (2, 16),
+    "F": (2, 17),
+    "Ne": (2, 18),
+    # period 3
+    "Na": (3, 1),
+    "Mg": (3, 2),
+    "Al": (3, 13),
+    "Si": (3, 14),
+    "P": (3, 15),
+    "S": (3, 16),
+    "Cl": (3, 17),
+    "Ar": (3, 18),
+    # period 4
+    "K": (4, 1),
+    "Ca": (4, 2),
+    "Sc": (4, 3),
+    "Ti": (4, 4),
+    "V": (4, 5),
+    "Cr": (4, 6),
+    "Mn": (4, 7),
+    "Fe": (4, 8),
+    "Co": (4, 9),
+    "Ni": (4, 10),
+    "Cu": (4, 11),
+    "Zn": (4, 12),
+    "Ga": (4, 13),
+    "Ge": (4, 14),
+    "As": (4, 15),
+    "Se": (4, 16),
+    "Br": (4, 17),
+    "Kr": (4, 18),
+    # period 5
+    "Rb": (5, 1),
+    "Sr": (5, 2),
+    "Y": (5, 3),
+    "Zr": (5, 4),
+    "Nb": (5, 5),
+    "Mo": (5, 6),
+    "Tc": (5, 7),
+    "Ru": (5, 8),
+    "Rh": (5, 9),
+    "Pd": (5, 10),
+    "Ag": (5, 11),
+    "Cd": (5, 12),
+    "In": (5, 13),
+    "Sn": (5, 14),
+    "Sb": (5, 15),
+    "Te": (5, 16),
+    "I": (5, 17),
+    "Xe": (5, 18),
+    # period 6
+    "Cs": (6, 1),
+    "Ba": (6, 2),
+    "La": (6, 3),
+    # lanthanides (row 8)
+    "Ce": (8, 4),
+    "Pr": (8, 5),
+    "Nd": (8, 6),
+    "Pm": (8, 7),
+    "Sm": (8, 8),
+    "Eu": (8, 9),
+    "Gd": (8, 10),
+    "Tb": (8, 11),
+    "Dy": (8, 12),
+    "Ho": (8, 13),
+    "Er": (8, 14),
+    "Tm": (8, 15),
+    "Yb": (8, 16),
+    "Lu": (8, 17),
+    # period 6 continued
+    "Hf": (6, 4),
+    "Ta": (6, 5),
+    "W": (6, 6),
+    "Re": (6, 7),
+    "Os": (6, 8),
+    "Ir": (6, 9),
+    "Pt": (6, 10),
+    "Au": (6, 11),
+    "Hg": (6, 12),
+    "Tl": (6, 13),
+    "Pb": (6, 14),
+    "Bi": (6, 15),
+    "Po": (6, 16),
+    "At": (6, 17),
+    "Rn": (6, 18),
+    # period 7
+    "Fr": (7, 1),
+    "Ra": (7, 2),
+    "Ac": (7, 3),
+    # actinides (row 9)
+    "Th": (9, 4),
+    "Pa": (9, 5),
+    "U": (9, 6),
+    "Np": (9, 7),
+    "Pu": (9, 8),
+    "Am": (9, 9),
+    "Cm": (9, 10),
+    "Bk": (9, 11),
+    "Cf": (9, 12),
+}
+
+
+class EdgeSelector(QDialog):
+    """BEC widget to display a selection dialog where the user can select and edge and an element"""
+
+    def __init__(self, parent=None, llim: int | float = 0, hlim: int | float = 1e6):
+        super().__init__(parent)
+        self.setWindowTitle("Absorption Edge Selector")
+        self._buttons = {}
+        self.selected_edge = None
+        self.selected_element = None
+        self.selected_energy = None
+        self._llim = llim
+        self._hlim = hlim
+
+        layout = QVBoxLayout(self)
+
+        text = QLabel("Select edge and element.")
+
+        edge_layout = QHBoxLayout()
+        edge_label = QLabel("Edge")
+        self._edge = QComboBox()
+        self._edge.addItems(["K", "L1", "L2", "L3"])
+        edge_layout.addWidget(edge_label)
+        edge_layout.addWidget(self._edge)
+        edge_layout.addStretch()
+
+        grid_layout = QGridLayout()
+        grid_layout.setContentsMargins(0, 0, 0, 0)
+        grid_layout.setSpacing(1)
+
+        for element, (row, col) in ELEMENTS.items():
+            button = QPushButton(element)
+            button.setFixedSize(42, 32)
+            button.setCheckable(True)
+            button.setAutoDefault(False)
+            button.setDefault(False)
+            button.clicked.connect(lambda checked=False, e=element: self._element_changed(e))
+            grid_layout.addWidget(button, row - 1, col - 1)
+            self._buttons[element] = button
+
+        res_layout = QHBoxLayout()
+        self._res = QLabel("")
+        res_layout.addStretch()
+        res_layout.addWidget(self._res)
+        res_layout.addStretch()
+
+        button_layout = QHBoxLayout()
+        self._cancel_button = QPushButton("Cancel")
+        self._cancel_button.clicked.connect(self.reject)
+        self._cancel_button.setStyleSheet(
+            f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+        )
+        self._select_button = QPushButton("Select")
+        self._select_button.setEnabled(False)
+        self._select_button.clicked.connect(self.accept)
+        self._select_button.setStyleSheet(
+            f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+        )
+
+        button_layout.addStretch()
+        button_layout.addWidget(self._cancel_button)
+        button_layout.addWidget(self._select_button)
+        button_layout.addStretch()
+
+        layout.addWidget(text)
+        layout.addLayout(edge_layout)
+        layout.addLayout(grid_layout)
+        layout.addLayout(res_layout)
+        layout.addLayout(button_layout)
+
+        self.adjustSize()
+        self.setFixedSize(self.sizeHint())
+
+        self._edge.activated.connect(self._edge_changed)
+        self._edge_changed()
+
+    @SafeSlot()
+    def _edge_changed(self, *_):
+        self.selected_edge = self._edge.currentText()
+        for element, button in self._buttons.items():
+            if "L" in self.selected_edge and element in ["H", "He"]:
+                button.setDisabled(True)
+                button.setChecked(False)
+            elif self.selected_edge in ["L2", "L3"] and element == "Li":
+                button.setDisabled(True)
+                button.setChecked(False)
+            else:
+                energy = xraydb.xray_edge(element, self.selected_edge, True)
+                if self.selected_element == element:
+                    self.selected_energy = energy
+                if energy is not None:
+                    if energy < self._llim or energy > self._hlim:
+                        button.setChecked(False)
+                        button.setDisabled(True)
+                    else:
+                        button.setEnabled(True)
+                else:
+                    button.setChecked(False)
+                    button.setDisabled(True)
+        self._set_select_text()
+
+    @SafeSlot()
+    def _element_changed(self, element: str | None = None):
+        if element is None:
+            if self.selected_element is None:
+                return
+            element = self.selected_element
+        for e, btn in self._buttons.items():
+            if e != element:
+                btn.setChecked(False)
+        self._buttons[element].setChecked(True)
+        self.selected_element = element
+        self.selected_energy = xraydb.xray_edge(element, self.selected_edge, True)
+        self._select_button.setEnabled(True)
+        self._set_select_text()
+
+    def _set_select_text(self):
+        if self.selected_energy is not None:
+            if self._buttons[self.selected_element].isChecked():
+                self._enable_button(self._select_button, True)
+                self._select_button.setText(
+                    f"Selected {self.selected_element}, {self.selected_edge}-edge, {self.selected_energy:0.1f} eV"
+                )
+            else:
+                self._enable_button(self._select_button, False)
+                self._select_button.setText("Select")
+        else:
+            self._enable_button(self._select_button, False)
+
+    @staticmethod
+    def _enable_button(button: QPushButton, enable: bool):
+        if enable:
+            button.setEnabled(True)
+            button.setStyleSheet(
+                f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+            )
+        else:
+            button.setDisabled(True)
+            button.setStyleSheet(
+                "QPushButton {{background-color: rgb(120, 120, 120); color: white;}}"
+            )
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    apply_theme("light")
+    dispatcher = BECDispatcher(gui_id="edge_selector")
+    win = EdgeSelector()
+    win.show()
+    sys.exit(app.exec_())
diff --git a/debye_bec/bec_widgets/widgets/scan_control_xas/__init__,py b/debye_bec/bec_widgets/widgets/scan_control_xas/__init__,py
new file mode 100644
index 0000000..e69de29
diff --git a/debye_bec/bec_widgets/widgets/scan_control_xas/qt_widgets.py b/debye_bec/bec_widgets/widgets/scan_control_xas/qt_widgets.py
new file mode 100644
index 0000000..0f4f1ef
--- /dev/null
+++ b/debye_bec/bec_widgets/widgets/scan_control_xas/qt_widgets.py
@@ -0,0 +1,264 @@
+from typing import Literal, Optional
+
+from bec_widgets.utils.colors import get_accent_colors
+from bec_widgets.utils.error_popups import SafeSlot
+from qtpy.QtCore import Signal
+
+# pylint: disable=E0611
+from qtpy.QtWidgets import (
+    QApplication,
+    QComboBox,
+    QDialog,
+    QGridLayout,
+    QHBoxLayout,
+    QLabel,
+    QPushButton,
+    QSizePolicy,
+    QVBoxLayout,
+    QWidget,
+)
+
+LABEL_WIDTH = 118
+ROW_MARGINS = (4, 0, 4, 0)
+ROW_SPACING = 6
+
+
+class Button(QWidget):
+    def __init__(self, label=None, label_button: str = "", enabled=False):
+        super().__init__()
+        layout = QHBoxLayout(self)
+        layout.setContentsMargins(*ROW_MARGINS)
+        layout.setSpacing(ROW_SPACING)
+        if label is not None:
+            self.label = QLabel(label)
+            self.label.setFixedWidth(LABEL_WIDTH)
+            layout.addWidget(self.label)
+        self.button = QPushButton(label_button)
+        self.enable_button(enabled)
+        layout.addWidget(self.button)
+
+    def clicked_connect(self, func):
+        """Connect a function to the button press."""
+        self.button.clicked.connect(func)
+
+    def enable_button(self, enable: bool = False):
+        if enable:
+            self.button.setStyleSheet(
+                f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+            )
+            self.button.setEnabled(True)
+        else:  # disabled
+            self.button.setStyleSheet(
+                "QPushButton {{background-color: rgb(120, 120, 120); color: white;}}"
+            )
+            self.button.setDisabled(True)
+
+    def setText(self, text):
+        self.button.setText(text)
+
+
+class ComboBox(QWidget):
+    def __init__(self, identifier="", label="", enums=None):
+        super().__init__()
+
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(*ROW_MARGINS)
+        layout.setSpacing(ROW_SPACING)
+
+        self.identifier = identifier
+
+        self.label = QLabel(label)
+        self.label.setFixedWidth(LABEL_WIDTH)
+        self.label.setWordWrap(True)
+        self.label.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Preferred)
+        layout.addWidget(self.label)
+
+        self.value = QComboBox()
+        self.value.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)
+
+        for entry in enums or []:
+            self.value.addItem(entry)
+
+        layout.addWidget(self.value)
+
+    def set_current_text(self, text):
+        self.value.setCurrentText(text)
+
+    def currentText(self) -> str:
+        return self.value.currentText()
+
+    def has_focus(self) -> bool:
+        return QApplication.focusWidget() is self.value.view()
+
+    def activated_connect(self, func):
+        """Connect a function to the Enter/Return key press."""
+        self.value.activated.connect(func)
+
+    def setDisabled(self, disable):
+        self.value.setDisabled(disable)
+
+
+class TextIndicator(QWidget):
+    def __init__(self, identifier="", label="", text=""):
+        super().__init__()
+
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(*ROW_MARGINS)
+        layout.setSpacing(ROW_SPACING)
+
+        self.identifier = identifier
+
+        self.label = QLabel(label)
+        self.label.setFixedWidth(LABEL_WIDTH)
+        self.label.setWordWrap(True)
+        self.label.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Preferred)
+        layout.addWidget(self.label)
+
+        self.value = QLabel(text)
+        self.value.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)
+
+        layout.addWidget(self.value)
+
+    def setText(self, text):
+        self.value.setText(text)
+
+    def text(self) -> str:
+        return self.value.text()
+
+
+ELEMENTS = {
+    # period 4
+    "Sc": (4, 3),
+    "Ti": (4, 4),
+    "V": (4, 5),
+    "Cr": (4, 6),
+    "Mn": (4, 7),
+    "Fe": (4, 8),
+    "Co": (4, 9),
+    "Ni": (4, 10),
+    "Cu": (4, 11),
+    "Zn": (4, 12),
+    "Ga": (4, 13),
+    "Ge": (4, 14),
+    "As": (4, 15),
+    "Se": (4, 16),
+    "Br": (4, 17),
+    "Kr": (4, 18),
+    # period 5
+    "Rb": (5, 1),
+    "Sr": (5, 2),
+    "Y": (5, 3),
+    "Zr": (5, 4),
+    "Nb": (5, 5),
+    "Mo": (5, 6),
+    "Tc": (5, 7),
+    "Ru": (5, 8),
+    "Rh": (5, 9),
+    "Pd": (5, 10),
+    "Ag": (5, 11),
+    "Cd": (5, 12),
+    "In": (5, 13),
+    "Sn": (5, 14),
+    "Sb": (5, 15),
+    "Te": (5, 16),
+    "I": (5, 17),
+    "Xe": (5, 18),
+    # period 6
+    "Cs": (6, 1),
+    "Ba": (6, 2),
+    "La": (8, 3),
+    "Ce": (8, 4),
+    "Pr": (8, 5),
+    "Nd": (8, 6),
+    "Pm": (8, 7),
+    "Sm": (8, 8),
+    "Eu": (8, 9),
+    "Gd": (8, 10),
+    "Tb": (8, 11),
+    "Dy": (8, 12),
+    "Ho": (8, 13),
+    "Er": (8, 14),
+    "Tm": (8, 15),
+    "Pb": (6, 14),
+    "Bi": (6, 15),
+    "Po": (6, 16),
+    "At": (6, 17),
+    "Rn": (6, 18),
+    # period 7
+    "Fr": (7, 1),
+    "Ra": (7, 2),
+    "Ac": (9, 3),
+    "Th": (9, 4),
+    "Pa": (9, 5),
+    "U": (9, 6),
+}
+
+
+class PeriodicTableDialog(QDialog):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.selected = None
+
+        layout = QGridLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(1)
+
+        for element, (row, col) in ELEMENTS.items():
+            button = QPushButton(element)
+            button.setFixedSize(42, 32)
+            button.clicked.connect(lambda checked=False, e=element: self.select(e))
+            layout.addWidget(button, row - 1, col - 1)
+
+    @SafeSlot()
+    def select(self, element):
+        self.selected = element
+        self.accept()
+
+
+class ElementSelector(QWidget):
+
+    dialogClosed = Signal()
+
+    def __init__(self):
+        super().__init__()
+        self.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(*ROW_MARGINS)
+        layout.setSpacing(ROW_SPACING)
+        self.label = QLabel("Element")
+        layout_selection = QHBoxLayout(self)
+        self.button = QPushButton("Select")
+        self.button.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)
+        self.button.setStyleSheet(
+            f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+        )
+        layout_selection.addWidget(self.button)
+        layout.addWidget(self.label)
+        layout.addLayout(layout_selection)
+        self.current_element = ""
+
+        self.button.clicked.connect(self.open_table)
+
+    def open_table(self):
+        dialog = PeriodicTableDialog(self)
+        if dialog.exec_():
+            self.current_element = dialog.selected
+            self.dialogClosed.emit()
+
+    def currentElement(self):
+        return self.current_element
+
+    def apply_theme(self, theme: Optional[Literal["dark", "light"]] = None):
+        """
+        Apply the theme
+
+        Args:
+            theme (Optional[str]): Theme, either "dark", "light", or None. Defaults to None.
+        """
+        if theme is None:
+            app = QApplication.instance()
+            theme = app.theme.theme  # type: ignore
+
+        self.button.setStyleSheet(
+            f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+        )
diff --git a/debye_bec/bec_widgets/widgets/scan_control_xas/register_scan_control_xas.py b/debye_bec/bec_widgets/widgets/scan_control_xas/register_scan_control_xas.py
new file mode 100644
index 0000000..c3fb9e7
--- /dev/null
+++ b/debye_bec/bec_widgets/widgets/scan_control_xas/register_scan_control_xas.py
@@ -0,0 +1,15 @@
+def main():  # pragma: no cover
+    from qtpy import PYSIDE6
+
+    if not PYSIDE6:
+        print("PYSIDE6 is not available in the environment. Cannot patch designer.")
+        return
+    from PySide6.QtDesigner import QPyDesignerCustomWidgetCollection
+
+    from .scan_control_xas_plugin import ScanControlXASPlugin
+
+    QPyDesignerCustomWidgetCollection.addCustomWidget(ScanControlXASPlugin())
+
+
+if __name__ == "__main__":  # pragma: no cover
+    main()
diff --git a/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas.py b/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas.py
new file mode 100644
index 0000000..995ea76
--- /dev/null
+++ b/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas.py
@@ -0,0 +1,421 @@
+"""
+Scan Control XAS: Custom BEC widget for Scan Control XAS scans.
+"""
+
+import sys
+from typing import Literal, Optional
+
+import numpy as np
+import pyqtgraph as pg
+from bec_lib import bec_logger
+from bec_lib.endpoints import MessageEndpoints
+from bec_widgets.utils.bec_dispatcher import BECDispatcher
+from bec_widgets.utils.colors import Colors, apply_theme, get_accent_colors
+from bec_widgets.utils.error_popups import SafeSlot
+from bec_widgets.widgets.control.scan_control.scan_control import ScanControl
+from qtpy.QtCore import Qt
+
+# pylint: disable=E0611
+from qtpy.QtWidgets import (
+    QApplication,
+    QCheckBox,
+    QFrame,
+    QGroupBox,
+    QHBoxLayout,
+    QLabel,
+    QPushButton,
+    QScrollArea,
+    QSizePolicy,
+    QVBoxLayout,
+    QWidget,
+)
+
+# pylint: disable=E0402
+from ....devices.mo1_bragg.mo1_bragg_utils import compute_spline
+from ..edge_selector import EdgeSelector
+
+logger = bec_logger.logger
+
+ALLOWED_SCANS = [
+    "xas_simple_scan",
+    "xas_simple_scan_with_xrd",
+    "xas_advanced_scan",
+    "xas_advanced_scan_with_xrd",
+]
+
+PLOT_RESOLUTION = 100
+H = 6.62606957e-34
+E = 1.602176634e-19
+C = 299792458
+
+X01DA_E_MIN = 4500
+X01DA_E_MAX = 60000
+X10DA_E_MIN = 4500
+X10DA_E_MAX = 35000
+
+
+class ScanControlXAS(ScanControl):
+    """
+    Main widget of Scan Control XAS
+    """
+
+    def __init__(self, *args, **kwargs):
+        self._xas_scans_helper_group = QGroupBox("XAS scan helper")
+        self._xas_scans_helper_group.setSizePolicy(
+            QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed
+        )
+        xas_scans_helper_layout = QVBoxLayout(self._xas_scans_helper_group)
+        self.xas_scans_helper_widget = XASScansHelper(self)
+        xas_scans_helper_layout.addWidget(self.xas_scans_helper_widget)
+        super().__init__(
+            allowed_scans=ALLOWED_SCANS, default_scan="xas_simple_scan", *args, **kwargs
+        )
+        self._show_motion_profile(self._selected_scan)
+
+        self.d_spacing = 0
+        self.bec_dispatcher.connect_slot(
+            self._update_d_spacing, MessageEndpoints.device_readback("mo1_bragg")
+        )
+
+    @SafeSlot(dict, dict)
+    def _update_d_spacing(self, msg: dict, _: dict):
+        d_spacing = msg["signals"].get("mo1_bragg_crystal_current_d_spacing")["value"]
+        if d_spacing != self.d_spacing:
+            self.d_spacing = d_spacing
+            self.xas_scans_helper_widget.update_plot(d_spacing=d_spacing)
+
+    def _add_metadata_form(self):
+        self.layout.addWidget(self._xas_scans_helper_group)  # type: ignore
+        super()._add_metadata_form()
+        self._connect_scan_parameter_signals()
+
+    def on_scan_selection_changed(self, scan_name: str):
+        super().on_scan_selection_changed(scan_name)
+        self._show_motion_profile(scan_name)
+        if scan_name in ALLOWED_SCANS:
+            self._connect_scan_parameter_signals()
+            self._scan_parameter_changed()
+
+    def _show_motion_profile(self, scan_name):
+        if scan_name in ALLOWED_SCANS:
+            self.xas_scans_helper_widget.setVisible(True)
+        else:
+            self.xas_scans_helper_widget.setVisible(False)
+
+    def _connect_scan_parameter_signals(self):
+        for box in self.kwarg_boxes:
+            for widget in box.findChildren(QWidget):
+                try:
+                    if hasattr(widget, "valueChanged"):
+                        widget.valueChanged.connect(
+                            self._scan_parameter_changed, Qt.ConnectionType.UniqueConnection
+                        )
+                    elif hasattr(widget, "textChanged"):
+                        widget.textChanged.connect(
+                            self._scan_parameter_changed, Qt.ConnectionType.UniqueConnection
+                        )
+                except TypeError:
+                    # Raised if a connection would not be unique anymore, i.e. if
+                    # connect_scan_parameter_signals is called more than once with
+                    # the same kwarg_boxes
+                    pass
+
+    @SafeSlot()
+    def _scan_parameter_changed(self, *_):
+        params = self.get_scan_parameters()[1]
+        self.xas_scans_helper_widget.update_plot(
+            scan_name=self._selected_scan, scan_parameters=params
+        )
+
+    def apply_theme(self, theme: Literal["dark", "light"]):
+        """
+        Apply the theme
+
+        Args:
+            theme (str): Theme, either "dark" or "light"
+        """
+        self.xas_scans_helper_widget.apply_theme(theme)
+
+
+class XASScansHelper(QWidget):
+    """
+    Additional widget specifically for XAS scans
+    """
+
+    def __init__(self, parent):
+        super().__init__()
+        self._parent_widget = parent
+        self.beamline = ""
+
+        outer_layout = QVBoxLayout(self)
+        outer_layout.setContentsMargins(0, 0, 0, 0)
+        self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed)
+
+        edge_selector_layout = QHBoxLayout()
+        edge_selector_label = QLabel("Absorption edge:")
+        self.edge_selector_button = QPushButton("Choose")
+        self.edge_label = QLabel("No edge selected")
+        edge_selector_layout.addWidget(edge_selector_label)
+        edge_selector_layout.addWidget(self.edge_label)
+        edge_selector_layout.addWidget(self.edge_selector_button)
+        edge_selector_layout.addStretch()
+
+        scan_rng_layout = QHBoxLayout()
+        self.scan_rng_ckbox = QCheckBox(self)
+        self.scan_rng_ckbox.setCheckState(Qt.CheckState.Checked)
+        scan_rng_label = QLabel("Auto adjust scan range to absorption edge")
+        scan_rng_layout.addWidget(self.scan_rng_ckbox)
+        scan_rng_layout.addWidget(scan_rng_label)
+        scan_rng_layout.addStretch()
+
+        plot_layout = QHBoxLayout()
+        plot_layout.setContentsMargins(0, 0, 0, 0)
+        self.plot_pos = self._make_plot(left_label="Energy<br>[eV]", bottom_label="Time [s]")
+        self.plot_vel = self._make_plot(
+            left_label="Scan Velocity<br>[eV/s]", bottom_label="Energy [eV]"
+        )
+        plot_layout.addWidget(self.plot_pos)
+        plot_layout.addWidget(self.plot_vel)
+
+        self.edge_energy = None
+
+        self.edge_selection = QHBoxLayout()
+        self.edge_selection.addLayout(edge_selector_layout)
+        self.edge_selection.addStretch(1)
+
+        outer_layout.addLayout(self.edge_selection)
+        outer_layout.addLayout(scan_rng_layout)
+        outer_layout.addLayout(plot_layout)
+
+        self.scan_name = None
+        self.scan_parameters = None
+        self.d_spacing = None
+
+        self.edge_selector_button.clicked.connect(self._update_edge)
+        self.scan_rng_ckbox.stateChanged.connect(self._update_auto_scan_rng)
+
+        self.apply_theme()
+
+    def _make_plot(self, left_label: str, bottom_label: str) -> pg.PlotWidget:
+        plot = pg.PlotWidget()
+        plot.setLabel("left", left_label)
+        plot.setLabel("bottom", bottom_label)
+        plot.setMouseEnabled(x=False, y=False)
+        plot.setMenuEnabled(False)
+        plot.hideButtons()
+        plot.getAxis("left").enableAutoSIPrefix(False)
+        plot.getAxis("bottom").enableAutoSIPrefix(False)
+        plot.setMinimumHeight(150)
+        plot.setMaximumHeight(150)
+        plot.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed)
+        return plot
+
+    def _add_edge_marker(self, plot, x_arr, y_arr, energy_arr, edge_marker):
+        if self.edge_energy is None:
+            return
+
+        idx = int(np.argmin(np.abs(np.asarray(energy_arr) - self.edge_energy)))
+        if idx == 0 or idx == len(energy_arr) - 1:
+            return
+        x_marker = x_arr[idx]
+        y_marker = y_arr[idx]
+
+        scatter = pg.ScatterPlotItem(
+            [x_marker],
+            [y_marker],
+            symbol=edge_marker,
+            size=20,
+            brush=pg.mkBrush("r"),
+            pen=pg.mkPen("r"),
+        )
+        plot.addItem(scatter, ignoreBounds=True)
+
+        label = pg.TextItem(self.edge_label.text(), anchor=(0, 1.5), color="r")
+        label.setPos(x_marker, y_marker)
+        plot.addItem(label, ignoreBounds=True)
+
+    @SafeSlot()
+    def _update_edge(self, *_):
+        if self.beamline == "":
+            hostname = self._parent_widget.client._hostname
+            start = hostname.find("x")
+            if start != -1:
+                self.beamline = hostname[start : start + 5]
+        match self.beamline:
+            case "x01da":
+                dlg = EdgeSelector(self, llim=X01DA_E_MIN, hlim=X01DA_E_MAX)
+            case "x10da":
+                dlg = EdgeSelector(self, llim=X10DA_E_MIN, hlim=X10DA_E_MAX)
+            case _:
+                dlg = EdgeSelector(self)
+        if dlg.exec_():
+            self.edge_energy = dlg.selected_energy
+            self.edge_label.setText(
+                f"{dlg.selected_element}, {dlg.selected_edge}-edge, {dlg.selected_energy:0.1f} eV"
+            )
+            self._update_auto_scan_rng()
+            self.update_plot()
+
+    @SafeSlot()
+    def _update_auto_scan_rng(self, *_):
+        if self.scan_rng_ckbox.isChecked() and self.edge_energy is not None:
+            self._parent_widget._restore_kwargs(
+                {
+                    "start": self.edge_energy - 200,
+                    "stop": self.edge_energy + 1000,
+                    "e_kink": self.edge_energy + 1000,
+                }
+            )
+
+    @SafeSlot()
+    def update_plot(self, *_, scan_name=None, scan_parameters=None, d_spacing=None, **__):
+        """Update the plots. Parameters which are not defined will default to None,
+        in which case it will use the internal values if available.
+
+        Args:
+            scan_name(str): Scan name, e.g. "xas_simple_scan"
+                Defaults to None
+            scan_parameters(dict): Scan parameters from ScanControl
+                Defaults to None
+            d_spacing(float): d-spacing in Angstrom
+                Defaults to None
+        """
+        if scan_name is not None:
+            self.scan_name = scan_name
+        if scan_parameters is not None:
+            self.scan_parameters = scan_parameters
+        if d_spacing is not None:
+            self.d_spacing = d_spacing
+        if self.scan_name is None:
+            return
+        if self.scan_parameters is None:
+            return
+        if self.d_spacing is None:
+            return
+        if d_spacing == 0:
+            return
+
+        x_time = np.linspace(0, self.scan_parameters["scan_time"], PLOT_RESOLUTION)
+
+        self.plot_pos.clear()
+        self.plot_vel.clear()
+
+        start_angle = self._energy_to_angle(self.scan_parameters["stop"])
+        stop_angle = self._energy_to_angle(self.scan_parameters["start"])
+        if start_angle == stop_angle:
+            return
+        if "xas_simple_scan" in self.scan_name:
+            amp = (stop_angle - start_angle) / 2
+            two_pi_f = 2 * np.pi * 1 / (2 * self.scan_parameters["scan_time"])
+            pos = (start_angle + stop_angle) / 2 + amp * np.cos(x_time * two_pi_f)
+            vel = two_pi_f * amp * np.sin(x_time * two_pi_f)
+            energy = self._angle_to_energy(pos)
+            vel_e = self._velocity_to_energy_per_s(pos, vel)
+
+            self.plot_pos.plot(x_time, energy)
+            self._add_edge_marker(self.plot_pos, x_time, energy, energy, "_")
+
+            self.plot_vel.plot(energy, -vel_e)
+            self._add_edge_marker(self.plot_vel, energy, -vel_e, energy, "|")
+
+        if "xas_advanced_scan" in self.scan_name:
+            if (
+                self.scan_parameters["e_kink"] < self.scan_parameters["start"]
+                or self.scan_parameters["e_kink"] > self.scan_parameters["stop"]
+            ):
+                return
+            if self.scan_parameters["scan_time"] == 0:
+                return
+            e_kink_deg = self._energy_to_angle(self.scan_parameters["e_kink"])
+            pos, vel, t = compute_spline(
+                start_angle,
+                stop_angle,
+                self.scan_parameters["p_kink"],
+                e_kink_deg,
+                self.scan_parameters["scan_time"],
+            )
+            x_time = np.cumsum(t) / 1000
+            energy = self._angle_to_energy(pos)
+            vel_e = self._velocity_to_energy_per_s(pos, vel)
+
+            time_flipped = -np.flip(x_time) + x_time[-1]
+            energy_flipped = np.flip(energy)
+            self.plot_pos.plot(time_flipped, energy_flipped)
+            self._add_edge_marker(self.plot_pos, time_flipped, energy_flipped, energy_flipped, "_")
+
+            self.plot_vel.plot(energy, -vel_e)
+            self._add_edge_marker(self.plot_vel, energy, -vel_e, energy, "|")
+
+        self.apply_theme()
+
+    def apply_theme(self, theme: Optional[Literal["dark", "light"]] = None):
+        """
+        Apply the theme
+
+        Args:
+            theme (Optional[str]): Theme, either "dark", "light", or None. Defaults to None.
+        """
+        if theme is None:
+            app = QApplication.instance()
+            theme = app.theme.theme  # type: ignore
+
+        self.edge_selector_button.setStyleSheet(
+            f"QPushButton {{background-color: {get_accent_colors().default.name()}; color: white;}}"
+        )
+
+        bg_color = pg.getConfigOption("background")
+        fg_color = pg.getConfigOption("foreground")
+
+        for plot in (self.plot_pos, self.plot_vel):
+            plot.setBackground(bg_color)
+            for axis in ("left", "bottom", "right", "top"):
+                ax = plot.getAxis(axis)
+                ax.setPen(pg.mkPen(color=fg_color))
+                ax.setTextPen(pg.mkPen(color=fg_color))
+
+            curves = plot.listDataItems()
+            colors = Colors.golden_angle_color(colormap="plasma", num=len(curves), format="HEX")
+            for curve, color in zip(curves, colors):
+                if not isinstance(curve, pg.ScatterPlotItem):
+                    curve.setPen(pg.mkPen(color=color, width=2))
+
+    def _energy_to_angle(self, energy: int | float):
+        if self.d_spacing is None:
+            return 0
+        if energy <= 0:
+            return 0
+        wl = C * H / (E * energy)
+        val = wl / (2 * self.d_spacing * 1e-10)
+        return np.asin(val) / np.pi * 180
+
+    def _angle_to_energy(self, angle: np.ndarray | int | float):
+        if self.d_spacing is None:
+            return 0
+        if isinstance(angle, np.ndarray):
+            if angle.any() <= 0:
+                return 0
+        else:
+            if angle <= 0:
+                return 0
+        wl = 2 * self.d_spacing * 1e-10 * np.sin(angle / 180 * np.pi)
+        return C * H / (E * wl)
+
+    def _velocity_to_energy_per_s(self, angle, velocity):
+        if self.d_spacing is None:
+            return 0
+        return (
+            -C
+            * H
+            * (np.pi / 180)
+            * np.cos(angle / 180 * np.pi)
+            / (E * 2 * self.d_spacing * 1e-10 * np.sin(angle / 180 * np.pi) ** 2)
+        ) * velocity
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    apply_theme("light")
+    dispatcher = BECDispatcher(gui_id="scan_control_advanced")
+    win = ScanControlXAS()
+    win.show()
+    sys.exit(app.exec_())
diff --git a/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas.pyproject b/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas.pyproject
new file mode 100644
index 0000000..8ba607b
--- /dev/null
+++ b/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas.pyproject
@@ -0,0 +1 @@
+{'files': ['scan_control_xas.py']}
\ No newline at end of file
diff --git a/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas_plugin.py b/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas_plugin.py
new file mode 100644
index 0000000..0647be1
--- /dev/null
+++ b/debye_bec/bec_widgets/widgets/scan_control_xas/scan_control_xas_plugin.py
@@ -0,0 +1,57 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from bec_widgets.utils.bec_designer import designer_material_icon
+from qtpy.QtDesigner import QDesignerCustomWidgetInterface
+from qtpy.QtWidgets import QWidget
+
+from .scan_control_xas import ScanControlXAS
+
+DOM_XML = """
+<ui language='c++'>
+    <widget class='ScanControlXAS' name='scan_control_xas'>
+    </widget>
+</ui>
+"""
+
+
+class ScanControlXASPlugin(QDesignerCustomWidgetInterface):  # pragma: no cover
+    def __init__(self):
+        super().__init__()
+        self._form_editor = None
+
+    def createWidget(self, parent):
+        if parent is None:
+            return QWidget()
+        t = ScanControlXAS(parent)
+        return t
+
+    def domXml(self):
+        return DOM_XML
+
+    def group(self):
+        return ""
+
+    def icon(self):
+        return designer_material_icon(ScanControlXAS.ICON_NAME)
+
+    def includeFile(self):
+        return "scan_control_xas"
+
+    def initialize(self, form_editor):
+        self._form_editor = form_editor
+
+    def isContainer(self):
+        return False
+
+    def isInitialized(self):
+        return self._form_editor is not None
+
+    def name(self):
+        return "ScanControlXAS"
+
+    def toolTip(self):
+        return "ScanControlXAS"
+
+    def whatsThis(self):
+        return self.toolTip()
diff --git a/debye_bec/scans/xas_simple_scan.py b/debye_bec/scans/xas_simple_scan.py
index d6a313f..b3be65d 100644
--- a/debye_bec/scans/xas_simple_scan.py
+++ b/debye_bec/scans/xas_simple_scan.py
@@ -244,7 +244,7 @@ class XasAdvancedScan(XasSimpleScan):
         stop: Annotated[float, ScanArgument(display_name="Stop Energy", description="Stop energy.", units=Units.eV)],
         scan_time: Annotated[float, ScanArgument(display_name="Scan Time", description="Time for one scan cycle.", units=Units.s, ge=0)],
         scan_duration: Annotated[float, ScanArgument(display_name="Scan Duration", description="Total scan duration.", units=Units.s, ge=0)],
-        p_kink: Annotated[float, ScanArgument(display_name="P Kink", description="Position of the kink.", ge=0)],
+        p_kink: Annotated[float, ScanArgument(display_name="P Kink", description="Position of the kink.", ge=0, le=100, units=Units.percent)],
         e_kink: Annotated[float, ScanArgument(display_name="E Kink", description="Energy of the kink.", units=Units.eV)],
         motor: Annotated[DeviceBase | None, ScanArgument(display_name="Motor", description="Bragg motor device.")] = None,
         daq: Annotated[DeviceBase | None, ScanArgument(display_name="DAQ", description="NIDAQ device.")] = None,
diff --git a/pyproject.toml b/pyproject.toml
index 813b6b4..792d73b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ dependencies = [
     "ophyd_devices",
     "opencv-python==4.11.0.86",
     "xrt",
+    "xraydb",
 ]
 
 [project.optional-dependencies]