Diff for "KAGRA/Subgroups/VIS/OpsManual/FishingRods"

Differences between revisions 32 and 33

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

This page describes the status of the fishing rods.

Beam splitter

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).

Range
- LVDT: [ -700 , +700 ] µm (3558).
- Stepper motor: [ -870,000 to +835,000 ] steps (3558).
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).

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?

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

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

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

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

-  ⇤ ← Revision 32 as of 2019-11-13 14:49:43 → 
  Size: 2670
  Editor: fabian.arellano
  Comment:
+   ← Revision 33 as of 2019-11-13 14:56:23 → ⇥
  Size: 2721
  Editor: fabian.arellano
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 7:
- * 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]]).
 Line 14:
- *  ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=7694|7694]]). What was the temperature that day?
-Line 17:
+Line 16:
+ * 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]]).
-Line 18:
+Line 20:
- * 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?