Displaying report 1-1 of 1.
Reports until 15:32, Wednesday 09 October 2019
H1 CDS (VE)
david.barker@LIGO.ORG - posted 15:32, Wednesday 09 October 2019 - last comment - 19:26, Wednesday 09 October 2019(52370)
changes to cell phone vacuum alarms following today's MX gatevalve closing

Chandra, Kyle, Dave:

After the MX gatevalves were closed this morning, the pressure in the X1 beam tube (Corner Station to MX) has been steadily rising as anticipated. The MX end exceeded its alarm point of 5.0e-09Torr several hours ago followed by the CS end an hour later.

Chandra has requested that the alarm level for these two gauge readings be increased to 1.0e-08Torr. I have made this change and restarted the alarm system

-<Channel name="H0:VAC-LX_X4_PT144B_PRESS_TORR" low="1.0e-10" high="5.0e-09" description="VE gauge, LX X1-beamtube, CC">
+<Channel name="H0:VAC-LX_X4_PT144B_PRESS_TORR" low="1.0e-10" high="1.0e-08" description="VE gauge, LX X1-beamtube, CC">

-<Channel name="H0:VAC-MX_X1_PT343B_PRESS_TORR" low="1.0e-10" high="5.0e-09" description="VE gauge, MX X1-beamtube, CC">
+<Channel name="H0:VAC-MX_X1_PT343B_PRESS_TORR" low="1.0e-10" high="1.0e-08" description="VE gauge, MX X1-beamtube, CC">

Chandra also requested that the alarm bypass on HAM6 be extended through to the end of next week

Bypass will expire:
Fri Oct 18 15:26:34 PDT 2019
For channel(s):
    H0:VAC-LX_Y0_PT110_MOD1_PRESS_TORR

 

Comments related to this report
chandra.romel@LIGO.ORG - 18:54, Wednesday 09 October 2019 (52386)

Looks like we've exceeded the 1e-8 Torr setpoint on PT343. Tomorrow we will raise setpoint to 2e-8 Torr.

david.barker@LIGO.ORG - 19:26, Wednesday 09 October 2019 (52388)

PT343B alarm level raised to 2.0e-08Torr

Displaying report 1-1 of 1.