feat(configs): add laser_delay to the experimental hutch config and a sim config

superxas_bec/device_configs/laser_delay_sim.yaml

@@ -0,0 +1,23 @@
+###################################
+##  Laser delay, simulated       ##
+###################################
+# SimLaserDelay: same device as LaserDelay but with soft signals instead of the five EPICS PVs, for a
+# local demo BEC. Add it to a running session:
+#   bec.config.add_to_session("<path to superxas_bec>/superxas_bec/device_configs/laser_delay_sim.yaml")
+# Then: dev.laser_delay.calibrate(-0.88); scans.line_scan(dev.laser_delay, -5, 5, steps=21, exp_time=0.1, relative=False)
+# step_sleep is shortened so that demo moves take seconds instead of tens of seconds.
+
+laser_delay:
+  readoutPriority: baseline
+  description: Simulated laser delay in ns (no EPICS)
+  deviceClass: superxas_bec.devices.laser_delay.SimLaserDelay
+  deviceConfig:
+    step_sleep: 0.01
+  deviceTags:
+    - laser
+    - timing
+    - simulation
+  onFailure: retry
+  enabled: true
+  readOnly: false
+  softwareTrigger: false

superxas_bec/device_configs/x10da_experimental_hutch.yaml

@@ -136,4 +136,11 @@ es2_try:
     prefix: X10DA-ES2-ET2:TRY
   onFailure: retry
   enabled: true
-  softwareTrigger: false
+  softwareTrigger: false
+
+###################################
+##   Laser delay (pump-probe)    ##
+###################################
+
+laser_delay_config:
+  - !include ./x10da_laser_delay.yaml

superxas_bec/device_configs/x10da_laser_delay.yaml

@@ -0,0 +1,37 @@
+###################################
+##   Laser delay (pump-probe)    ##
+###################################
+# Delay card X10DA-ES2-TIM:SET1 + RF phase shifter 2 (ES4) for the Duetto laser, external trigger.
+# Usage and calibration: superxas_bec/devices/LASER_DELAY.md
+#
+# readoutPriority baseline: every scan records the delay and the calibration once; a scan over
+#   laser_delay elevates it to monitored.
+# onFailure buffer: if the timing or ES4 IOC is down, baseline readings fall back to the last value
+#   instead of aborting unrelated scans. If the PVs are unreachable at startup, BEC disables only this
+#   device (no I/O in __init__), the rest of the session loads.
+# Calibration values are NOT config keys: run dev.laser_delay.calibrate(...) after every laser
+#   restart, or dev.laser_delay.set_calibration(...) to restore a previous one.
+
+laser_delay:
+  readoutPriority: baseline
+  description: Laser delay in ns (delay card + phase shifter 2, Duetto); calibrate after laser restart
+  deviceClass: superxas_bec.devices.laser_delay.LaserDelay
+  deviceConfig:
+    delay_coarse_pv: X10DA-ES2-TIM:SET1-DELAY
+    delay_fine_pv: X10DA-ES2-TIM:SET1-FINE
+    evr_period_pv: X10DA-ES2-TIM:EVR-FPS2
+    phase_v1_pv: X10DA-ES4:AO-02
+    phase_v2_pv: X10DA-ES4:AO-01
+    rf_period: 2.0
+    cavity_period: 12.01
+    vmax: 1.0
+    steps_per_rf_period: 36
+    step_sleep: 0.1
+    phase_reference: stored
+  deviceTags:
+    - laser
+    - timing
+  onFailure: buffer
+  enabled: true
+  readOnly: false
+  softwareTrigger: false