• PcalTask

Detailed task list of PCal is listed here.

X-end PCal

• TxPD1 repairing
  • THS4631 seems broken
  • Asked Bin-Hua to bring parts.
• OFS2 closed loop functionality repairing
  • 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
• Laser remote control
  • PC will be setup.
  • Same script as in Y-end may be applicable.
• 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 ?
• 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.
• 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
• OL/CL TF measurement
• RPN measurement
• Laser noise measurement
• Harmonics noise measurement
• VGA noise measurement
• Excitation noise measurement
• Noise model
• OFS upgrade

Laser power calibration setting in Toyama Univ.