[Alex, Cheryl, Deepak, Giacomo]

Yesterday we put the optics in all four HAUX:
HAUX SN006: IM1 = SM1-05
HAUX SN007: IM2 = PMMT1-04
HAUX SN008: IM3 = PMMT2-02
HAUX SN009: IM4 = SM2-01

Cheryl and Deepak are now trained in the art of HAUX open-heart surgery! :-)

We also put all cables in place: sat-amp->field cable->adapter cable (fake vacuum feed-through)->extension (just dummies, the final ones are already in the chamber)->quadpuss (finals).
16 OSEMs were connected and tweaked (by moving the LED and/or PD plates) to obtain a open light value of at least 25k. Only two of them (S/N: 211 & 491) were unable to reach 25k (reading just above 20k), and were replaced with 2 of the 4 spares to be on the safe side. The other two (S/N: 230 & 212) were not tested at all.

A list of OSEM assignment and measured open light value follows:

---> IM1
Cable S/N:  S1105084
A (UL)  S/N: 204  OLV: 29000
B (LL)  S/N: 454  OLV: 27000
C (UR)  S/N: 199  OLV: 26000
D (LR) S/N: 262  OLV: 29000

---> IM2
Cable S/N:  S1105082
A (UL)  S/N: 237  OLV: 25000
B (LL)  S/N: 427  OLV: 29000
C (UR)  S/N: 468  OLV: 26000
D (LR) S/N: 450  OLV: 28000

---> IM3
Cable S/N:  S1105078
A (UL)  S/N: 377  OLV: 25000
B (LL)  S/N: 292  OLV: 26000
C (UR)  S/N: 404  OLV: 26000
D (LR) S/N: 309  OLV: 26000

---> IM4
Cable S/N:  S1105083
A (UL)  S/N: 189  OLV: 27000
B (LL)  S/N: 403  OLV: 29000
C (UR)  S/N: 436  OLV: 27000
D (LR) S/N: 239  OLV: 26000

We measured the OSEMs noise in open light position (and exposed to ambient light... not sure how much this impacts performance), as a sanity check and reference. See attached figure (left/right are just two different groups of 8 OSEMs; bottom graphs show the coherence of each OSEMs with he first one, as a check for common noise).

Also, we finished alignment of 2 HAUX (SN006 = IM1 and SN008 = IM3), except for DC pitch balancing, inserted the OSEMs, clamped them down to the table and covered them with a HxTS fabric cover for some night measurements. As we don't have actuation yet, we just let the suspensions swing all night (2012/08/28 from 3:00 to 13:00 UTC should be quiet time). Attached is a PSD taken during this time.