Diff for "KAGRA/Observation/iKAGRA/Manual/VIS"

Differences between revisions 1 and 16 (spanning 15 versions)

Mode Cleaner Suspensions

Each MC suspension has 4 coils and 2 pico-motors (pitch, yaw).

ETM

Each iKAGRA ETM suspension has 4 coils and 4 pico-motors (pitch:1-6, yaw:2-7, z:3-8, y:4-9).

If you find a problem about coil-magnet actuator, please check 2 things.

1. Coil drivers in particular for Y-end had a loose connection with power line (-18V, -15V).

Please check the LED on coil driver. If the LED is out, try to fasten the power line.

2. Sometimes watchdog? system stop the output current from the coil driver in order to protect mechanical system.

PR3

Check the PR3 status according to the flowchart below.

Details of the check points

Check point (1): Do OSEM values stay stable within +/- 3 um?
- The

Appendix

KAGRA/Observation/iKAGRA/Manual/VIS (last edited 2016-03-24 17:13:06 by AyakaShoda)

-  ⇤ ← Revision 1 as of 2016-02-02 10:43:51 → 
  Size: 83
  Editor: OsamuMiyakawa
  Comment:
+   ← Revision 16 as of 2016-03-24 15:20:10 → ⇥
  Size: 1216
  Editor: AyakaShoda
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-=== Check list ===
+=== Mode Cleaner Suspensions ===
Each MC suspension has 4 coils and 2 pico-motors (pitch, yaw).
-Line 3:
+Line 4:
- *
+=== ETM ===
-Line 5:
+Line 6:
-=== In the case of IFO failure or emergency ===
+Each iKAGRA ETM suspension has 4 coils and 4 pico-motors (pitch:1-6, yaw:2-7, z:3-8, y:4-9).
-Line 7:
+Line 8:
- *
+If you find a problem about coil-magnet actuator, please check 2 things.

1. Coil drivers in particular for Y-end had a loose connection with power line (-18V, -15V). 

Please check the LED on coil driver. If the LED is out, try to fasten the power line.

2. Sometimes watchdog? system stop the output current from the coil driver in order to 
protect mechanical system. 

=== PR3 ===
Check the PR3 status according to the flowchart below.

[[attachment:TroubleshootFlowchart.png|{{attachment:TroubleshootFlowchart.png|text describing image|width=800}}]]

==== Details of the check points ====
[[attachment:CheckPoint1-3.png|{{attachment:CheckPoint1-3.png|text describing image|width=800}}]]
[[attachment:CheckPoint5-6.png|{{attachment:CheckPoint5-6.png|text describing image|width=800}}]]

 1. Check point (1): Do OSEM values stay stable within +/- 3 um?
   The  


==== Appendix ====
[[attachment:PR3overview.png|{{attachment:PR3overview.png|text describing image|width=800}}]]