aLIGO LHO Logbook

H1 SUS

mark.barton@LIGO.ORG - posted 14:42, Tuesday 04 December 2012 - last comment - 10:59, Wednesday 05 December 2012(4824)

PR3 OL values

Mark B.

I took OL readings on PR3 (and calculated appropriate gains and offsets) after Travis installed OSEMs on PR3 and left them backed out. 

M1T1  26124.3  1.1483561  13062.15
M1T2    30353 0.98837018   15176.5
M1T3  28842.1  1.0401462  14421.05
M1LF  25990.7   1.154259  12995.35
M1RT  26134.2  1.1479211   13067.1
M1SD  28493.2  1.0528828   14246.6
M2UL  18073.3  1.6599072   9036.65
M2LL  20597.1  1.4565157  10298.55
M2UR  19602.2  1.5304405    9801.1
M2LR  17998.4  1.6668148    8999.2
M3UL -3.19153 -9399.8803 -1.595765
M3LL  23289.9   1.288112  11644.95
M3UR  24780.1  1.2106489  12390.05
M3LR    17455  1.7187052    8727.5

There's something wrong with M3UL (not fully backed out?), but I'll enter the remaining gains and offsets to the OSEMINF screen.

Comments related to this report

mark.barton@LIGO.ORG - 15:15, Tuesday 04 December 2012 (4825)

Link

Mark B.

I entered the above gains and offsets except that I used 1.000 and -15000 for M3UL. I then created a new h1suspr3_safe.snap file. I archived the old as h1suspr3_safe20121005.snap based on its modification date, and made a spare copy of today's new one as h1suspr3_safe20121204.snap.

mark.barton@LIGO.ORG - 10:59, Wednesday 05 December 2012 (4840)

Link

Mark B., Travis

Travis replugged the cable and M3UL came good. Its OL was

M3UL 17553.2 1.7091  8776.6

I entered the gain and offset and redid the safe.snap file (spare copy as h1suspr3_safe20121205.snap).