|
Size: 182
Comment:
|
Size: 2974
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 1: | Line 1: |
| = Arm Length Stabilization System = | = Arm Length Stabilization System (Green Lock System) = |
| Line 3: | Line 3: |
| {{https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0074/E1707416/001/DSC_0055.JPG}} | == Configuration (One Arm) == {{https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0074/E1707416/001/DSC_0055.JPG|ALS Configuration|width=500}} |
| Line 5: | Line 6: |
| == To Be Determined == | == To Do == * optical layout of PR2/SR2 chambers, POP/POS table * select AOM and AOM driver * fix green fiber specs, including how to do the laying * green fiber after EOM/AOM or before EOM/AOM * where to put frequency offset: PLL or arm length * more detailed noisebudget * initial alignment planning * comm/diff servo topology * lock acquisition scheme |
| Line 8: | Line 18: |
| === Electronics === * Common Mode Servo Board [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3705|JGW-D1503705]] (ready) * PLL Board (similar to CMB, ordered to AEL) * Phase Frequency Discriminator [[https://dcc.ligo.org/LIGO-D1002476/public|LIGO-D1002476]] (prototype developed at UToyama) * Fast version of IQ Demodulator [[https://dcc.ligo.org/LIGO-E1100044/public|LIGO-E1100044]] (ordered to AEL) * RF Oscillator for PDH [[https://www.keysight.com/ja/pdx-x201911-pn-N5181B/mxg-x-series-rf-analog-signal-generator-9-khz-to-6-ghz?cc=JP&lc=jpn|Keysight N5181B MXG]] (ready) * VCO for PLL [[https://www.keysight.com/ja/pdx-x201773-pn-E8663D/psg-rf-analog-signal-generator-100-khz-to-9-ghz?cc=JP&lc=jpn|Keysight E8663D]] (ready) * Frequency counter (optional) [[https://www.keysight.com/ja/pd-1893411-pn-53220A/350-mhz-universal-frequency-counter-timer-12-digits-s-100-ps?cc=JP&lc=jpn|Keysight 53220A]]? === Opto-electronics === * Broadband PD for PLL [[https://www.newport.com/p/818-BB-21A|Newport 818-BB-21A]] (1.2 GHz bandwidth) * Resonant PD for green PDH [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1280|JGW-D1201280]] * AOM and AOM driver (to be determined) * EOM: Qubig xxxxxx (ready) * QPD for green beam pointing? (Use Oplev QPD?) * Picomotor mount? (ordered) === Optics === * Faraday isolator [[https://www.thorlabs.co.jp/thorproduct.cfm?partnumber=IO-5-532-HP|Thorlabs IO-5-532-HP]] (to be ordered) * Periscopes [[https://www.thorlabs.com/navigation.cfm?guide_id=54|Thorlabs Ø1.5inch Post Assembly]] (ready) * Dichroic mirror: LEO DRX-1064/532-45P-UF-2038 (ready) * Harmonic splitter: LEO LWP-45-R532-T1064-UF-2038 (ready) === Fiber optics === * Fiber (under test at UToyama) * probably with jacket, with endcap, without AR coating * polarization maintaining * Fiber collimator (Tholabs PAF? Fixed focus collimator?) == Drawings == * PSL table [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=6335|JGW-D1706335]] * POP table * PR2 in-vac [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=6473|JGW-G1706473]] * TRX * POS table * SR2 in-vac * TRY |
|
| Line 10: | Line 57: |
| * Document tree for ALS [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7769|JGW-E1807769]] |
Arm Length Stabilization System (Green Lock System)
Configuration (One Arm)
To Do
- optical layout of PR2/SR2 chambers, POP/POS table
- select AOM and AOM driver
- fix green fiber specs, including how to do the laying
- green fiber after EOM/AOM or before EOM/AOM
- where to put frequency offset: PLL or arm length
- more detailed noisebudget
- initial alignment planning
- comm/diff servo topology
- lock acquisition scheme
List of Items
Electronics
Common Mode Servo Board JGW-D1503705 (ready)
- PLL Board (similar to CMB, ordered to AEL)
Phase Frequency Discriminator LIGO-D1002476 (prototype developed at UToyama)
Fast version of IQ Demodulator LIGO-E1100044 (ordered to AEL)
RF Oscillator for PDH Keysight N5181B MXG (ready)
VCO for PLL Keysight E8663D (ready)
Frequency counter (optional) Keysight 53220A?
Opto-electronics
Broadband PD for PLL Newport 818-BB-21A (1.2 GHz bandwidth)
Resonant PD for green PDH JGW-D1201280
- AOM and AOM driver (to be determined)
- EOM: Qubig xxxxxx (ready)
- QPD for green beam pointing? (Use Oplev QPD?)
- Picomotor mount? (ordered)
Optics
Faraday isolator Thorlabs IO-5-532-HP (to be ordered)
Periscopes Thorlabs Ø1.5inch Post Assembly (ready)
- Dichroic mirror: LEO DRX-1064/532-45P-UF-2038 (ready)
- Harmonic splitter: LEO LWP-45-R532-T1064-UF-2038 (ready)
Fiber optics
- Fiber (under test at UToyama)
- probably with jacket, with endcap, without AR coating
- polarization maintaining
- Fiber collimator (Tholabs PAF? Fixed focus collimator?)
Drawings
PSL table JGW-D1706335
- POP table
PR2 in-vac JGW-G1706473
- TRX
- POS table
- SR2 in-vac
- TRY
Documents
Document tree for ALS JGW-E1807769