Differences between revisions 4 and 13 (spanning 9 versions)

Minute of KAGRA commissioning meeting

Date: 2018/3/20 11AM~12PM
Attendance: Miyakawa, Aso, Yokozawa, Izumi, Akutsu
- eZuce: Ushiba, Suzuki, Tomaru, Inoue, Shoda

1. Report of work of the last week and plan of work

Alignment, ETMY: Izumi
- Tuning of ETMY is still going on. Currently RMS is ~10urad.
  - ETMY yaw motion is still large.
  - Length, Yaw, Translation (diagonal of L) of BF dampings are not easy.
  - Only Yaw seems to be damped, but combination of them is not going well.
- Beam will be checked every night, specially after pump down yesterday.
  - IMMT1,2 shifted in pitch by ~200urad, in yaw by ~100urad.
MIF: Izumi
- LSC full model has been implemented in k1imc0.
- CAL model is being tested on k1imc0.
  - Cal line will be produced in CAL model.
  - Invisible calibration line will be implemented in LSC model.
- k1bs, k1imc will be connected by Dolphin. ETMs are connected to k1imc by RFM.
CAL: Yamamoto, Yokozawa
- Started using IMC as training of calibration.
  - Simple calibration will be implemented.
- X end PD will be removed and Baffle PD will be located instead. Changing PD will be done in the week of 3/26.
  - BURNDY to D-SUB9pin transformer should be implemented.
- T cam at Y end is now stopped. It will be fixed soon. T cam X end will start in the next week. Both front T cams are woking.
Cryo:
- Current temperature is 18K.

2. Schedule of ETMX installtion

See the schedule at the commissioning top page.

3. Tasks or discussions

Selection of full channel -> DGS Yamamoto
Selection of science channel -> Commissioning Izumi
Screens at control room
- Sensitivity.
- PEM.
- Needs laser safety information.
GW alert: online alert in the control room might be prepared. -> Togoshi

4. Phase2

Others

Frequency noise can be measured by middle lock. Large intensity noise can be a problem.
Next meeting: 3/27

KAGRA/Commissioning/Weekly/20180320/Minute (last edited 2018-03-20 11:55:44 by OsamuMiyakawa)

-  ⇤ ← Revision 4 as of 2018-03-20 11:07:09 → 
  Size: 1379
  Editor: OsamuMiyakawa
  Comment:
+   ← Revision 13 as of 2018-03-20 11:55:44 → ⇥
  Size: 2034
  Editor: OsamuMiyakawa
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 6:
-  * eZuce: Ushiba, Suzuki, Tomaru, Inoue
+  * eZuce: Ushiba, Suzuki, Tomaru, Inoue, Shoda
 Line 13:
-  * Tuning of ETMY is still going on. ETMY yaw motion is still large.
+  * Tuning of ETMY is still going on. Currently RMS is ~10urad.
   * ETMY yaw motion is still large.
   * Length, Yaw, Translation (diagonal of L) of BF dampings are not easy. 
   * Only Yaw seems to be damped, but combination of them is not going well.
-Line 16:
+Line 19:
-Line 17:
+Line 21:
- * MIF:
  * LSC full model has been implemented in k1imc.
+ * MIF: Izumi
  * LSC full model has been implemented in k1imc0.
  * CAL model is being tested on k1imc0.
   * Cal line will be produced in CAL model.
   * Invisible calibration line will be implemented in LSC model.
  * k1bs, k1imc will be connected by Dolphin. ETMs are connected to k1imc by RFM.
-Line 20:
+Line 28:
- * CAL:
+ * CAL: Yamamoto, Yokozawa
-Line 22:
+Line 30:
-  * X end PD will be removed and Baffle PD will be located instead. Changing PD will be done around 3/26.
+   * Simple calibration will be implemented.
  * X end PD will be removed and Baffle PD will be located instead. Changing PD will be done in the week of 3/26.
   * BURNDY to D-SUB9pin transformer should be implemented.
  * T cam at Y end is now stopped. It will be fixed soon. T cam X end will start in the next week. Both front T cams are woking.
-Line 34:
+Line 45:
- * CAL model location? at the same k1imc, or k1test with Dolphin connection.
+ * Selection of full channel -> DGS Yamamoto
 * Selection of science channel -> Commissioning Izumi
-Line 36:
+Line 48:
- * Selection of storing DAQ channel -> DGS, before phase 1
  * Check the total amount.

 * Screens at control room -> who, when?
+ * Screens at control room 
  * Sensitivity.
  * PEM.