Reports until 18:15, Monday 13 January 2014
H1 ISC
sheila.dwyer@LIGO.ORG - posted 18:15, Monday 13 January 2014 (9230)
X arm alignment today (Alexa, Sheila, Keita)
  TMSX (PIT, YAW) w/ PD Voltage ITMX (PIT,YAW) w/ V ETMX (PIT, YAW) w/ V
PD1 (205. -206) w/ ~2.5, 0dB (84.5, -45) w/ 6.5, 0dB (242.0, 95.5) w/ .36V, 0dB
PD4 (274.5, -268) w/ ~2.5,  0dB (52.5,-78) w/ 6.7, 0dB (265.5,65.5) w/ .4V, 0dB
aligned (239.75, -237) (68.5,-61.5) (253.75, 80.5)
slider cal [urad/urad] (1.04, 1.16) (1.17, 1.14) (1.53, 1.20)

After HEPI offset was relieved by moving TMS PIT, initial alignment was attempted again, and we got the above. The power level is consistent with the original alignment (alog 9064).

However, strange thing is that the ETMX slider calibration seems to have changed by a factor of two-ish for both P and Y (Ref: alog 9126 and alog 9087).  Because of this, I cannot totally kill the possibility that we're fooled by multiple bounces though it's very unlikely because the power levels are the same as before. (But the question is, did somebody mess with SUS?) Tomorrow we need to start with the "aligned" numbers above and see what happens.

  TMSX slider cal (P, Y) [urad/urad] ITMX ETMX
Dec 24 2013 (1.04, 1.14) (1.2, 1.1) (0.8, 0.6)
Jan 06 2014 (1.04, 1.14) (1.17, 1.14) (0.90, 0.51)
Jan 13 2014 (1.04, 1.16) (1.17, 1.14) (1.53, 1.20)

Keita and Alexa writing as Sheila.