Differences between revisions 32 and 34 (spanning 2 versions)
⇤ ← Revision 32 as of 2019-11-13 14:49:43 →
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← Revision 34 as of 2019-11-13 15:00:37 → ⇥
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Deletions are marked like this. Additions are marked like this.
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 * Ragnge
  * LVDT: [ -2500 , +4900 ] µm
  * Stepper motor: [ -1,400,000 , +1,400,000 ] steps		  * '''Range:'''
  * '''LVDT:''' [ -2500 , +4900 ] µm ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=7694|7694]]).
  * '''Stepper motor:''' [ -1,400,000 , +1,400,000 ] steps ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=7694|7694]]).
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 * Observations  * '''Observations:'''
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 * ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=7694|7694]]). What was the temperature that day?
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 * It's been at its lowest position since the temperature was 25 ºC. We set the keystone to 488 µm and couldn't move it down more ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=8125|8125]], [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=8645|8645]]).
 * Range: from -700 µm to +700 µm in the LVDT and from -870,000 to +835,000 steps in the stepper motor ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=3358|3558]]). What was the temperature that day?		  * '''Range'''
  * '''LVDT:''' [ -700 , +700 ] µm ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=3358|3558]]).
  * '''Stepper motor:''' [ -870,000 to +835,000 ] steps ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=3358|3558]]).
  * Temperature when measured:
 * '''Observations:''' it's been at its lowest position since the temperature was 25 ºC. We set the keystone to 488 µm and couldn't move it down more ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=8125|8125]], [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=8645|8645]]).

Describe KAGRA/Subgroups/VIS/OpsManual/FishingRods here.

This page describes the status of the fishing rods.

Beam splitter

Top filter

  • Range:

    • LVDT: [ -2500 , +4900 ] µm (7694).

    • Stepper motor: [ -1,400,000 , +1,400,000 ] steps (7694).

    • Temperature when measured:

  • Observations:

    • At 25 ºC it's possible to use the fishing rod to set the keystone at nominal position (8125).

    • at 24.5 ºC or lower it's not (8645, 11465).

Standard Filter

  • Range

    • LVDT: [ -700 , +700 ] µm (3558).

    • Stepper motor: [ -870,000 to +835,000 ] steps (3558).

    • Temperature when measured:

  • Observations: it's been at its lowest position since the temperature was 25 ºC. We set the keystone to 488 µm and couldn't move it down more (8125, 8645).

Bottom filter

  • This fishing rod didn't seem to have any problems before but we haven't tried to use it at every temperature condition we've had.

  • Range: from -1000 µm to +1800 µm in the LVDT and from -746,000 to +746,000 steps in the stepper motor (3280).What was the temperature that day?

SR2

Top filter

Range: [ -1,700,000 , 1,500,000 ]

Stardard filter

Range: from -750 µm to 1000 µm in the LVDT and from 300,000 to 1,000,00 steps in the stepper motor (4431).

Bottom filter

Range: from -500 µm to 600 µm in the LVDT and from -550,000 to -250,000 (4430).

8082

SR3

Top filter

(7758)

Standard Flter

(4720)

Bottom Filter

(4654)

SRM

Top Filter

(7857)

Standard Filter

(4721)

Bottom Filter

(4721)

KAGRA/Subgroups/VIS/OpsManual/FishingRods (last edited 2020-09-18 10:45:40 by fabian.arellano)