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Reports until 10:23, Thursday 14 June 2012
H2 SUS
betsy.weaver@LIGO.ORG - posted 10:23, Thursday 14 June 2012 - last comment - 20:06, Thursday 14 June 2012(3124)
MC2 Metal Build Testing - Open Light Voltages

MC2 Metal Build OLVs measured

BOSEMs

s/n 092, OLV 27702.4 (T1)

s/n 043, OLV 22923.7 (T2) 

s/n 030, OLV 28098.7 (T3)

s/n 023, OLV 26766.2 (LF)

s/n 086, OLV 27693.4 (RT)

s/n 613, 30169.8 (SIDE) Characterized one

 

AOSEMs

M2

s/n 307, OLV 24825 (M2 UL)

s/n 474, OLV 24060 (M2 LL)

s/n 439, OLV 24304 (M2 UR)

s/n 305, OLV 25954 (M2 LR)

M3

s/n 207, OLV 24822 (M3 UL)

s/n 311, OLV 23630 (M3 LL)

s/n 446, OLV 26177 (M3 UR)

s/n 188, OLV 16687 (M3 LR)

Comments related to this report
stuart.aston@LIGO.ORG - 10:55, Thursday 14 June 2012 (3125)
Link 

[Stuart A, Jeff B, Betsy B]

After being provided with the open light counts for each BOSEM and AOSEM on MC2, gains and offsets were calculated and plugged into the medm screen OSEM INPUT filters for M1, M2 and M3. 

M1 BOSEMs
Top 1 (T1), sn = 092, OL = 27702.4, offset = -13851, gain = 1.083
Top 2 (T2), sn = 043, OL = 22923.7, offset = -11462, gain = 1.309
Top 3 (T3), sn = 030, OL = 28098.7, offset = -14049, gain = 1.068
Left (LF) , sn = 023, OL = 26766.2, offset = -13383, gain = 1.121
Right (RT), sn = 086, OL = 27693.4, offset = -13847, gain = 1.083
Side (SD) , sn = 613, OL = 30169.8, offset = -15085, gain = 0.994

M2 AOSEMs
Upper Left (UL) , sn = 307, OL = 24825, offset = -12413, gain =	1.208
Lower Left (LL) , sn = 474, OL = 24060, offset = -12030, gain =	1.247
Upper Right (UR), sn = 439, OL = 24304, offset = -12152, gain =	1.234
Lower Right (LR), sn = 305, OL = 25954, offset = -12977, gain =	1.156

M3 AOSEMs
Upper Left (UL) , sn = 207, OL = 24822, offset = -12411, gain =	1.209
Lower Left (LL)	, sn = 311, OL = 23630, offset = -11815, gain =	1.270
Upper Right (UR), sn = 446, OL = 26177, offset = -13089, gain =	1.146
Lower Right (LR), sn = 188, OL = 16687, offset = -8344 , gain =	1.798

Now that these OSEM gains and offsets have been applied, each OSEM can be centred/aligned.
stuart.aston@LIGO.ORG - 12:50, Thursday 14 June 2012 (3130)
Link 

[Stuart A, Jeff B, Betsy B]

Relevant DQ channels needed to be made available for the new x1sushxts05 model. Therefore the x1sushxts05.ini file has been edited to include the following channels (note that the original file was backed-up with the file name x1sushxts05_bak.ini):-  

X1:SUS-HXTS_M1_OSEMINF_T1_OUT_DQ
X1:SUS-HXTS_M1_OSEMINF_T2_OUT_DQ
X1:SUS-HXTS_M1_OSEMINF_T3_OUT_DQ
X1:SUS-HXTS_M1_OSEMINF_LF_OUT_DQ
X1:SUS-HXTS_M1_OSEMINF_RT_OUT_DQ
X1:SUS-HXTS_M1_OSEMINF_SD_OUT_DQ
               
X1:SUS-HXTS_M1_DAMP_L_IN1_DQ
X1:SUS-HXTS_M1_DAMP_T_IN1_DQ
X1:SUS-HXTS_M1_DAMP_V_IN1_DQ
X1:SUS-HXTS_M1_DAMP_R_IN1_DQ
X1:SUS-HXTS_M1_DAMP_P_IN1_DQ
X1:SUS-HXTS_M1_DAMP_Y_IN1_DQ
              
X1:SUS-HXTS_M2_OSEMINF_LL_OUT_DQ
X1:SUS-HXTS_M2_OSEMINF_LR_OUT_DQ
X1:SUS-HXTS_M2_OSEMINF_UL_OUT_DQ
X1:SUS-HXTS_M2_OSEMINF_UR_OUT_DQ
               
X1:SUS-HXTS_M2_WIT_L_DQ
X1:SUS-HXTS_M2_WIT_P_DQ
X1:SUS-HXTS_M2_WIT_Y_DQ
               
X1:SUS-HXTS_M3_OSEMINF_LL_OUT_DQ
X1:SUS-HXTS_M3_OSEMINF_LR_OUT_DQ
X1:SUS-HXTS_M3_OSEMINF_UL_OUT_DQ
X1:SUS-HXTS_M3_OSEMINF_UR_OUT_DQ
                   
X1:SUS-HXTS_M3_OSEMWIT_L_DQ
X1:SUS-HXTS_M3_OSEMWIT_P_DQ
X1:SUS-HXTS_M3_OSEMWIT_Y_DQ

The framebuilder was restarted using the following commands:-

telnet tripleteststand 8087

shutdown

Now that all the above channels are available, it should enable transfer functions and power spectra to be taken.
stuart.aston@LIGO.ORG - 20:06, Thursday 14 June 2012 (3140)
Link 

[Stuart A, Jeff B, Betsy B]

Thanks for the efforts of those on-site at LHO, who have suspended MC2 (HSTS) and aligned BOSEMs/AOSEMs, which has enabled the first set of transfer functions to be taken this evening, using the alternative x1sushxts05 model on the triple test stand.

Prior to taking transfer functions it was necessary to conduct some pre-flight checks of the digital system, watchdogs, filters, and verify correct sensor and actuator signs.

Transfer functions have been carried out for all degrees of freedom with damping loops OFF. These show good agreement with the model, can be found below.

However, these TFs need to be compared with results from previous phases (plots pending), and M1, M2, M3, power spectra taken, before MC2 can complete Phase 1b testing. 

All data, scripts and plots generated have been committed to the SUS svn as of this entry.

Finally, a BURT snapshot has been taken of the functioning x1sushxts05 environment (20120614_x1sushxts05_MC2.snap).
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