Reports until 18:05, Monday 11 November 2019
LHO VE (VE)
gerardo.moreno@LIGO.ORG - posted 18:05, Monday 11 November 2019 - last comment - 18:13, Monday 11 November 2019(53169)
CP1 and CP2 Ion Pump Settings

(Patrick T, Gerardo M)

Temporarily changed low alarm limit through EPICS.

CP1:

Old value: H0:VAC-LY_CP1_VI170_AIP_PRESS_TORR.LOW 5.28e-08

New value: H0:VAC-LY_CP1_VI170_AIP_PRESS_TORR.LOW 3.16e-10

CP2:

Old value: H0:VAC-LX_CP2_VI190_AIP_PRESS_TORR.LOW 5.28e-08

New value: H0:VAC-LX_CP2_VI190_AIP_PRESS_TORR.LOW 3.16e-10

The reason for the change is that both of these ion pumps are pumping on the main volume, and their lower limit was alarming due to being to high, the new settings are equivalent to those used on the large ion pumps, which also pump on the main volume.  The permanent solution is coming.

 

Comments related to this report
chandra.romel@LIGO.ORG - 18:13, Monday 11 November 2019 (53170)

Gerardo, nice job on updating VAC MEDM screens to reflect new corner configuration!