diff --git a/aliases/alvra.py b/aliases/alvra.py
index 0b91090..710211d 100755
--- a/aliases/alvra.py
+++ b/aliases/alvra.py
@@ -230,16 +230,16 @@ aliases = {
                 'z_und' : 125,
                 'desc' : '4.5M Jungfrau detector',
                 'eco_type' : 'devices_general.alvradetectors.DIAClient'},
-#        'http://sf-daq-2:10000' : {
-#                'alias' : 'DetJF',
-#                'z_und' : 127,
-#                'desc' : '4.5M Jungfrau detector',
-#                'eco_type' : 'devices_general.alvradetectors.JF'},
-#         'SLAAR21-LTIM01-EVR0' : {
-#                 'alias' : 'LaserShutter',
-#                 'z_und' : 127,
-#                 'desc' : 'Laser Shutter',
-#                 'eco_type' : 'loptics.laser_shutter.laser_shutter'},
+       'SARES11-V' : {
+               'alias' : 'vacuum',
+               'z_und' : 127,
+               'desc' : 'Prime vacuum system',
+               'eco_type' : 'endstations.alvra_prime.vacuum'},
+        'SLAAR11-LTIM01-EVR0' : {
+                'alias' : 'laserShutter',
+                'z_und' : 122,
+                'desc' : 'Laser Shutter',
+                'eco_type' : 'loptics.laser_shutter.laser_shutter'},
 #         = dict(
 #            alias = ''
 #            z_und = 
diff --git a/endstations/alvra_prime.py b/endstations/alvra_prime.py
index 956a222..0729f79 100755
--- a/endstations/alvra_prime.py
+++ b/endstations/alvra_prime.py
@@ -83,3 +83,9 @@ class microscope:
             
 # prism (as a SmarAct-only stage) is defined purely in ../aliases/alvra.py
             
+class vacuum:
+	def __init__(self,Id):
+		self.Id.Id
+		
+		# Vacuum PVs for Prime chamber
+		self.spectrometerVac = PV('SARES11-VMFR126-600:PRESSURE')
\ No newline at end of file
diff --git a/loptics/alvra_laser_shutter.py b/loptics/alvra_laser_shutter.py
new file mode 100644
index 0000000..ebf9e3f
--- /dev/null
+++ b/loptics/alvra_laser_shutter.py
@@ -0,0 +1,24 @@
+from epics import caput, caget
+
+class laser_shutter:
+    def __init__(self,Id):
+        self.Id = Id
+
+    def __repr__(self):
+        return self.get_status()
+    
+    def get_status(self):
+        Id = self.Id
+        status = caget(Id+":FrontUnivOut5_SOURCE")
+        if status == 4:
+            return 'open'
+        elif status == 3:
+            return 'close'
+        else:
+            return "unknown"
+
+    def open(self):
+        caput(self.Id+":FrontUnivOut3_SOURCE",4)
+
+    def close(self):
+        caput(self.Id+":FrontUnivOut3_SOURCE",3)