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## page was renamed from Upgrade_09/Suspensions
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== ITM Suspensions ==
The ITMs are being changed into SOS. For this we will need to fab 2 SOS towers. We will re-use existing OSEMs and misc in-vac hardware.		 <<TableOfContents(2)>>
== ►Suspension records ==
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=== SOS Updates (Mostly ITMs, but where applicable, extra parts for other new Optics): ===
29 Oct 2009 - Most of the parts are here, only the EQ stops are left to be dealt with. Most of this stuff needs to visit Bob's lab for cleaning.		 X/Y are named with the NEW convention.
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30 Oct 2009 - Screws for EQ stops ordered. Also, fixtures should be sent from MIT ~today, so we should get them soon. === ITMX ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:ITMY_OSEM.png}}||Satellite Box #???||
|| UL || 284 || 1.97 || 0.985 ||
|| UR || 306 || 1.71 || 0.855 ||
|| LR || 264 || 1.47 || 0.735 ||
|| LL || 219 || 1.55 || 0.775 ||
|| SD || 261 || 1.67 || 0.835 ||
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3 Nov 2009 - Most of the screws for EQ stops have arrived (a few were backordered, and will be here shortly). Now I need to drill them / have the shop drill them for the viton. === ITMY ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:ITMX_OSEM.png}}||Satellite Box #105||
|| UL || 220 || 1.788 || 0.894 ||
|| UR || 289 || 1.656 || 0.828 ||
|| LR || 303 || 1.670 || 0.835 ||
|| LL || 207 || 1.903 || 0.952 ||
|| SD || 277 || 2.002 || 1.001 ||
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5 Nov 2009 - Most of the 6-32 screws have been drilled for the viton. The 1/4-20 3/4" screws have arrived, but the 1/4-20 1.5" screws won't be here until early December. === ETMX ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> ||Satellite Box #???||
|| UL || 526 || 1.47 || 0.735 ||
|| UR || 567 || 1.36 || 0.68 ||
|| LR || 513 || 1.60 || 0.80 ||
|| LL || 511 || 1.76 || 0.88 ||
|| SD || 590 || 0.108(?) || - ||
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17 Nov 2009 - 50 of the 1/4-20 3/4" screws have been drilled. The 1/4-20 1.25" screws arrived, and need drilling. Also, the wire standoffs and guiderods have arrived from the shop. They just need to be cleaned (just like all the other stuff). === ETMY ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> ||Satellite Box #???||
|| UL || 502 || 1.7 || 0.85 ||
|| UR || 568 || 1.631 || 0.8155 ||
|| LR || 226 || 2.105 || 1.0525 ||
|| LL || 205 || 1.582 || 0.791 ||
|| SD || 552 || 1.490 || 0.745 ||
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20 Dec 2009 - All of the remaining needed EQ stop screws have been drilled. === PRM ===
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28 Dec 2009 - Another email sent to Tim @ MIT to check on the status of the Guide Rod fixture...he said he has it and would send it, but it hasn't arrived here yet. || OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:PRM_OSEM.png}}||Satellite Box #???||
|| UL || 516 || 1.748 || 0.874 ||Short OSEMs||
|| UR || 520 || 1.695 || 0.848 ||
|| LR || 504 || 1.934 || 0.967 ||
|| LL || 511 || 2.076 || 1.038 ||
|| SD || 500 || 9.21 --(1.680)-- || 4.605||
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|| '''Item''' || '''# in Drawing D960001''' || '''DCC / Part Number''' || '''Qty Needed PER SUS''' || '''Qty Needed for Upgrade''' || '''Qty Have IN HAND''' || '''Plan''' ||
|| Sensor/Actuator Plate || 1 || D960002 || 2 || 4 || 4 || attachment:green.png DONE ||
|| Suspension Block || 2 || D960003 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Tower Base || 3 || D960004 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Right Side Plate || 4 || D960005 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Left Side Plate || 5 || D960006 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Upper Mirror Clamp || 6 || D960007 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Lower Clamp || 7 || D960008-1 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Lower Clamp, Opposite || 8 || D960008-2 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Wire Clamp || 9 || 1205308-1 (kind of #?) || 1 || 2 || 3 || attachment:green.png DONE ||
|| Clamp, Suspension Block || 10 || D960134 || 2 || 4 || 5 || attachment:green.png DONE ||
|| Stiffener Plate || 11 || D960009 || 1 || 2 || 2 || attachment:green.png DONE ||
|| Dumbbell Standoff || 12 || D970075 || 6 || 7 optics x 6 = 42 || 15 in boxes from LLO, plus many in Bob's cleanroom || attachment:green.png DONE ||
|| Safety Stop, Long || 13 || D970313 || 2 || Enough to replace EQ stops for ALL optics? (20) || || attachment:orange.png Holes drilled. Need to clean&bake, insert viton ||
|| Optic || 14 || Various || 1 || || || attachment:green.png DONE when delivered from ATF ||
|| Sensor/Actuator Assembly || 15 || D960011 || 5 || 10 || 6 short OSEMS in SUS Clean Plastic Box || attachment:green.png Reuse (long) OSEMs from current ITM MOSs - DONE ||
|| Wire Standoff || 16 || D970187 || 2 || 7 optics x 2 + spares = 18 || 7 + 25 from shop|| attachment:green.png DONE ||
|| Guide Rod || 17 || D970188 || 2 || 7 optics x 2 + spares = 18 || 3 + 25 from shop|| attachment:green.png DONE ||
|| Magnet || 18 || D960501 || 6 || 7 optics x 6 = 42 || ~100 in Bob's Cleanroom || attachment:orange.png DONE - need to match sets still ||
|| Safety Stop, Small || 19 || D960312 || 4 || Enough to replace EQ stops for ALL optics? (40) || || attachment:orange.png Holes drilled. Need to clean&bake, insert viton ||
|| Safety Stop || 20 || D960311 || 4 || Enough to replace EQ stops for ALL optics? (40) || || attachment:orange.png Holes drilled. Need to clean&bake, insert viton ||
|| || There is no 21 || || || || || ||
|| SST Spring Plunger, 10-32 || 22 || 84985A999 (McMaster Part #) || 5 || 10 || 22 || attachment:green.png DONE ||
|| SST SOC HD CAP Screw || 23 || 4-40, 3/8" || 4 || 8 || 10 || attachment:green.png DONE ||
|| SST SOC HD CAP Screw || 24 || 4-40, 1/2" || 8 || 16 || 20 || attachment:green.png DONE ||
|| SST SOC HD CAP Screw || 25 || 1/4-20, 3/4" || 20 || 40 || 50 || attachment:green.png DONE ||
|| SST SOC HD CAP Screw || 26 || 1/4-20, 1.25" || 4 || 8 || 10 || attachment:green.png DONE ||
|| SST Lock Washer || 27 || 1/4" || 4 || 8 || 50 || attachment:green.png DONE ||
|| SST Washer || 28 || 1/4" || 4 || 8 || 50 || attachment:green.png DONE ||
|| Steel Music Wire || 29 || Diam=0.0017", CFW || || || || attachment:green.png DONE ||
|| Viton for EQ stops || || || || || || attachment:orange.png DONE - In clean plastic boxes. Need to cut to size. ||
|| Fixtures || || || || || || attachment:orange.png Some have arrived. May still need to get guiderod fixture. Email sent to Tim@MIT 28Dec09 ||		  . /!\ '' Valera changed the trans impedance gain of SD OSEM '' [[http://nodus.ligo.caltech.edu:8080/40m/3913|ELOG#3913]]

=== SRM ===

|| OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:SRM_OSEM.png}}||Satellite Box #???||
|| UL || 522 || 1.744 || 0.872 ||Short OSEMs||
|| UR || 513 || 1.773 || 0.887 ||
|| LR || 515 || 1.636 || 0.818 ||
|| LL || 519 || 2.071 || 1.036 ||
|| SD || 502 || 1.758 || 0.879 ||
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== Tip/Tilt Suspensions ==
For the PRC/SRC folding we will use Tip/Tilt stages modified to be used passively. No active damping, no coil drive. Just magnets and natural eddy current damping.		 === BS ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> ||Satellite Box #???||
|| UL || - || 1.50 || 0.75 ||
|| UR || - || 1.57 || 0.785 ||
|| LR || - || 1.57 || 0.785 ||
|| LL || - || 1.38 || 0.69 ||
|| SD || - || 1.57 || 0.785 ||
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We have got five initial TT delivery. 4 is for the PRC/SRC folding. 1 is for tests/spare. We would employ 4 more TTs for the Input/Output steering, though we should seriously consider the foot prints of them. === MC1 ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> ||Satellite Box #???||
|| UL || - || 1.3 || 0.650 ||
|| UR || - || 1.4 || 0.700 ||
|| LR || - || 1.45 || 0.725 ||
|| LL || - || 1.56 || 0.780 ||
|| SD || - || 1.67 || 0.835 ||
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[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=7074 Bram's TT assembly document on the dcc]
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[http://ilog.ligo-wa.caltech.edu:7285/advligo/Tip-Tilt_Stage/Tip-Tilt_Mechanical_Design Bram's TT wiki / drawings] === MC2 ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> ||Satellite Box #???||
|| UL || - || - || - ||
|| UR || - || - || - ||
|| LR || - || - || - ||
|| LL || - || - || - ||
|| SD || - || - || - ||
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We will employ vertical springs designed by Valera@LLO. Mike@LLO suggested the items additionally needed for attaching the vertical springs.
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|| '''Qty.''' || '''DCC No.''' || '''Item''' ||
|| 2 || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=2836 D0901164] || Blade Spring ||
|| 2 || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=2837 D0901165] || Blade Wire Clamp Block ||
|| 2 || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=2838 D0901166] || Blade Wire Clamp ||
|| 1 || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=3653 D0901404] || Blade Spring Mounting Platform (Active Tip-Tilt) ||
|| 1 || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=3682 D0901409] || Viton Damper Mount ||		 === MC3 ===
|| OSEM || S/N || Max out || Max/2 ||<v|6> ||Satellite Box #???||
|| UL || - || 1.37 || 0.685 ||
|| UR || - || 1.71 || 0.855 ||
|| LR || - || 1.77 || 0.885 ||
|| LL || - || 1.56 || 0.780 ||
|| SD || - || 1.59 || 0.795 ||
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attachment:TT_crosssection.png
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== MC ==
We will re align the MC suspensions so that we are centered on the mirrors this time.		 == ►Other suspensions ==
We will realign the MC suspensions so that we are centered on the mirrors this time.
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== Others ==
The PRM, SRM, and BS will remain SOS. No new towers.

The ETMs will remain MOS. No new towers.		 The PRM, SRM, and BS will remain SOS. No new towers.The ETMs will be replaced to the SOSs later. They exist on the flow bench at the Yend.

Contents

  1. ►Suspension records
  2. ►Other suspensions

►Suspension records

X/Y are named with the NEW convention.

ITMX

OSEM

S/N

Max out

Max/2

ITMY_OSEM.png

Satellite Box #???

UL

284

1.97

0.985

UR

306

1.71

0.855

LR

264

1.47

0.735

LL

219

1.55

0.775

SD

261

1.67

0.835

ITMY

OSEM

S/N

Max out

Max/2

ITMX_OSEM.png

Satellite Box #105

UL

220

1.788

0.894

UR

289

1.656

0.828

LR

303

1.670

0.835

LL

207

1.903

0.952

SD

277

2.002

1.001

ETMX

OSEM

S/N

Max out

Max/2

Satellite Box #???

UL

526

1.47

0.735

UR

567

1.36

0.68

LR

513

1.60

0.80

LL

511

1.76

0.88

SD

590

0.108(?)

-

ETMY

OSEM

S/N

Max out

Max/2

Satellite Box #???

UL

502

1.7

0.85

UR

568

1.631

0.8155

LR

226

2.105

1.0525

LL

205

1.582

0.791

SD

552

1.490

0.745

PRM

OSEM

S/N

Max out

Max/2

PRM_OSEM.png

Satellite Box #???

UL

516

1.748

0.874

Short OSEMs

UR

520

1.695

0.848

LR

504

1.934

0.967

LL

511

2.076

1.038

SD

500

9.21 1.680

4.605

  • /!\ Valera changed the trans impedance gain of SD OSEM ELOG#3913

SRM

OSEM

S/N

Max out

Max/2

SRM_OSEM.png

Satellite Box #???

UL

522

1.744

0.872

Short OSEMs

UR

513

1.773

0.887

LR

515

1.636

0.818

LL

519

2.071

1.036

SD

502

1.758

0.879

BS

OSEM

S/N

Max out

Max/2

Satellite Box #???

UL

-

1.50

0.75

UR

-

1.57

0.785

LR

-

1.57

0.785

LL

-

1.38

0.69

SD

-

1.57

0.785

MC1

OSEM

S/N

Max out

Max/2

Satellite Box #???

UL

-

1.3

0.650

UR

-

1.4

0.700

LR

-

1.45

0.725

LL

-

1.56

0.780

SD

-

1.67

0.835

MC2

OSEM

S/N

Max out

Max/2

Satellite Box #???

UL

-

-

-

UR

-

-

-

LR

-

-

-

LL

-

-

-

SD

-

-

-

MC3

OSEM

S/N

Max out

Max/2

Satellite Box #???

UL

-

1.37

0.685

UR

-

1.71

0.855

LR

-

1.77

0.885

LL

-

1.56

0.780

SD

-

1.59

0.795

►Other suspensions

We will realign the MC suspensions so that we are centered on the mirrors this time.

The PRM, SRM, and BS will remain SOS. No new towers.The ETMs will be replaced to the SOSs later. They exist on the flow bench at the Yend.

Suspensions/OSEMs (last edited 2012-02-07 01:51:48 by KiwamuizumiATligoDOTorg)