Reports until 11:56, Tuesday 08 July 2025
H1 PEM
ryan.crouch@LIGO.ORG - posted 11:56, Tuesday 08 July 2025 (84918)
Dust Monitor Quarterly Testing - FAMIS27661

Closes FAMIS27661

For the CS dust monitors:

LVEA:

5: It passed the zero count test after 3 rounds, there were 2 and 1 cts of 0.3 before which is still a pass, the flow was 2.6 and I adjusted it up to 2.8. PASS

6: It passed the zero count test after 2 rounds, there was 1 count of 0.3 before which is a pass, the flow was 2.8. PASS

10: It passed the the zero count test first round and had a flow of 2.8. PASS

Diode Room: It has a slightly high flow of 2.9 (within 5% of 2.8, acceptable) and I was not able to adjust it down from the dust monitor but it passed the zero count test. PASS

Labs:

Lab1: The optics lab passed the zero count test on the second round and has a flow rate of 2.7 which is within the 5% error stated in the manual. PASS

Lab2: The Clean and Bake lab passed the zero count tests first round and has a flow of 2.8. PASS

Lab3: The PCAL lab dust monitor is still being troubleshooted.

I did not enter the PSL enclosure or anteroom, RyanS will check them during the next incursion.

For the OUT building dust monitors:

FCES: There is no longer a dust monitor setup here, I borrowed it for the vent work as theres no vacuum pump out there so during observing its nominally off.

EndX: It passed the zero count test on the first round, the flow was 2.6 (just outside 5% out of range) and I went to check the vacuum pump at it was at -14.5 mmHg and it was at the end of its upper adjustable range. This may mean the vacuum pump is nearing time for a rebuild as I was not able to increase it from the dust monitor. Tentative PASS

EndY: It passed its zero count on the second round, and its flow was 2.75. PASS