X-end PCal

Urgent

TxPD1 repairing
- THS4631 seems broken
- Ordering parts.
OFS2 closed loop functionality repairing
- Relay is OK. Investigating the cause.
- Asked Bin-Hua to bring relay.
DAC noise problem
- With DAC cable, very large noise and offset are observed. It may be difficult to set working point.

2nd-urgent

DAC input bias between MEDM and actual
Laser remote control
- PC will be setup.
- Same script as in Y-end may be applicable.
Stray light
- Put dumpers
  - Borrowing 2 from Toyama univ. They has to be returned on 9/19 or 20.
WSK measurement
- Alignment of the last 2 mirrors (Accidentally moved)
- Modification is required from LIGO's procedure.
- Code for WSK measurement analysis
- To be delivered on 9/19 or 20.
- May have to prepare voltage calibrator to calibrate readout by DGS.

~9/11

Periscope install
- Equip picomoters to the mirror
- Wall between duct and modules
  - Ordered. Will arrive Kamioka on 9/11.
- Set duct and wall.
- Green laser preparation
  - Power supplies are OK.
  - New post arrived. To be set.
- TCam has to come back.
  - PC has to be re-installed.

~JPS meeting 9/14

AOM response measurement
- Check working point is consistent to that in KEK
OL/CL TF measurement
RPN measurement
Laser noise measurement
Harmonics noise measurement
VGA noise measurement
Excitation noise measurement
Peak stability test
Shot noise
Offset input noise
Noise model

~9/28

Complete periscope install
Rx module alignment

~X-arm commissioning line injection

BPM test
- Picomoter setting
Preparation for X-arm commissioning calibration line injection

~O3

Unstable D-sub connection at Tx module
- Some connectors are dead.
Cable arrangement
OFS upgrade
Operation tool preparation

Bonus work

AOM current
- Sometimes over 0.5 V ?
Take care about grounding
Initial laser power just after turned on seems too small ?

Pre-categorization

Y-end PCal

Laser power calibration setting in Toyama Univ.

-  ⇤ ← Revision 7 as of 2018-09-06 11:34:34 → 
  Size: 2512
  Editor: chihiro.kozakai
  Comment:
+   ← Revision 13 as of 2018-09-09 21:24:45 → ⇥
  Size: 2930
  Editor: chihiro.kozakai
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 19:
+Urgent
-Line 21:
+Line 23:
-  * Asked Bin-Hua to bring parts.
+  * Ordering parts.
-Line 23:
+Line 25:
-  * Relay is suspected. Will confirm using tester.
  * Asked Bin-Hua to bring parts.
 * Interlock equipment
  * Switch is equipped to modules.
  * Connector between chassis and laser system is repaired.
 * Unstable D-sub connection at Tx module
  * Some connectors are dead. 
 * Cable arrangement
+  * Relay is OK. Investigating the cause.
  * Asked Bin-Hua to bring relay.
 * DAC noise problem
  * With DAC cable, very large noise and offset are observed. It may be difficult to set working point. 

2nd-urgent

 * DAC input bias between MEDM and actual
-Line 34:
+Line 36:
- * BPM test
  * Picomoter setting
 * Periscope install
  * Equip picomoters to the mirror
  * Wall between duct and modules 
   * Ordered. Will arrive Kamioka on 9/10.
  * Set duct and wall.
  * Green laser preparation
   * Power supplies are OK.
   * Waiting for new post. 
  * Rx module alignment
  * TCam has to come back.
   * PC has to be re-installed.
 * AOM current
  * Sometimes over 0.5 V ?
-Line 58:
+Line 45:
- * DAC noise problem
  * With DAC cable, very large noise and offset are observed. It may be difficult to set working point. 
 * Take care about grounding
+~9/11

 * Periscope install
  * Equip picomoters to the mirror
  * Wall between duct and modules 
   * Ordered. Will arrive Kamioka on 9/11.
  * Set duct and wall.
  * Green laser preparation
   * Power supplies are OK.
   * New post arrived. To be set. 
  * TCam has to come back.
   * PC has to be re-installed.

~JPS meeting 9/14

 * AOM response measurement
  * Check working point is consistent to that in KEK
-Line 67:
+Line 69:
+ * Peak stability test
 * Shot noise
 * Offset input noise
-Line 68:
+Line 73:
+~9/28
 * Complete periscope install 
 * Rx module alignment

~X-arm commissioning line injection

 * BPM test
  * Picomoter setting
 * Preparation for X-arm commissioning calibration line injection

~O3

 * Unstable D-sub connection at Tx module
  * Some connectors are dead. 
 * Cable arrangement
-Line 69:
+Line 90:
+ * Operation tool preparation
-Line 70:
+Line 92:
+Bonus work

 * AOM current
  * Sometimes over 0.5 V ? 
 * Take care about grounding
 * Initial laser power just after turned on seems too small ?

Pre-categorization


= Y-end PCal =