Differences between revisions 65 and 72 (spanning 7 versions)
⇤ ← Revision 65 as of 2011-08-23 02:02:28 →
Size: 5301
Editor: KiwamuIzumi
Comment:
← Revision 72 as of 2012-02-07 01:51:48 → ⇥
Size: 3295
Editor: KiwamuizumiATligoDOTorg
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
## page was renamed from Upgrade_09/Suspensions
Line 8: Line 9:
|| OSEM || S/N || Max out || Max/2 ||<v|6> attachment:ITMY_OSEM.png||Satellite Box #???||
|| UL || 284 || 2.09 || 1.045 ||		 || OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:ITMY_OSEM.png}}||Satellite Box #???||
|| UL || 284 || 1.97 || 0.985 ||
Line 11: Line 12:
|| LR || 264 || 1.49 || 0.745 ||
|| LL || 219 || 1.56 || 0.780 ||
|| SD || 261 || 1.68 || 0.840 ||		 || LR || 264 || 1.47 || 0.735 ||
|| LL || 219 || 1.55 || 0.775 ||
|| SD || 261 || 1.67 || 0.835 ||
Line 16: Line 17:
|| OSEM || S/N || Max out || Max/2 ||<v|6> attachment:ITMX_OSEM.png||Satellite Box #105|| || OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:ITMX_OSEM.png}}||Satellite Box #105||
Line 41: Line 42:
|| OSEM || S/N || Max out || Max/2 ||<v|6> attachment:PRM_OSEM.png||Satellite Box #???|| || OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:PRM_OSEM.png}}||Satellite Box #???||
Line 48: Line 49:
 . /!\ '' Valera changed the trans impedance gain of SD OSEM '' [http://nodus.ligo.caltech.edu:8080/40m/3913 ELOG#3913]  . /!\ '' Valera changed the trans impedance gain of SD OSEM '' [[http://nodus.ligo.caltech.edu:8080/40m/3913|ELOG#3913]]
Line 52: Line 53:
|| OSEM || S/N || Max out || Max/2 ||<v|6> attachment:SRM_OSEM.png||Satellite Box #???|| || OSEM || S/N || Max out || Max/2 ||<v|6> {{attachment:SRM_OSEM.png}}||Satellite Box #???||
Line 70: Line 71:
|| 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 ||		 || 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 ||
Line 88: Line 89:
|| 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 ||		 || 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 ||
Line 94: Line 95:


=== Gluing configuration ===
attachment:mirror_gluing.png

== ►Tip/Tilt Suspensions ==

[[Compliant Eddy Current Damping in 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.

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.

[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=7074 Bram's TT assembly document on the dcc]

[http://ilog.ligo-wa.caltech.edu:7285/advligo/Tip-Tilt_Stage/Tip-Tilt_Mechanical_Design Bram's TT wiki / drawings]

We will employ vertical springs designed by Valera@LLO. Mike@LLO suggested the items additionally needed for attaching the vertical springs.

|| '''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 ||


There was a problem of the backplane. A beam of the backplane blocked the laser light goes through the TT optic. attachment:TT_crosssection.png

The design has been modified to address this issue. The modified design is here. attachment:TT_ECD_Drawings_for_40m_100215.pdf

'''Baking order to Bob: ''' attachment:TTparts_2010-03-11_K_Arai.xls

'''Magnets: '''10mm dia. 10mm thick SmCo magnet pressed in the mirror holder.

'''Wires: '''<200um musical wire for the mirror suspension / Bram will give us tungsten wires.

'''Titanium screws:''' We try grade 3 cheap Ti screws (#2-56 3/8") ~$1.3ea (c.f. McMaster ~$15ea)

'''To Do:'''''' '''Wire Jig drawing

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)