Reports until 11:37, Tuesday 17 January 2023
H1 TCS
camilla.compton@LIGO.ORG - posted 11:37, Tuesday 17 January 2023 - last comment - 16:12, Monday 09 June 2025(66832)
TCS HWS SLED Stock.
Last recorded on alog 58758. Both were replaced in Dec 2022 (66179) so we expect they will be fine until the end of 2023.
Currently have two new 840nm spares, and one 790nm used spare that could be used in a pinch. We will order more spares. 

* Added to ICS DEFECT-TCS-7753, will give to Chrisitna for dispositioning once new stock has arrived. 

Comments related to this report
camilla.compton@LIGO.ORG - 12:47, Monday 30 January 2023 (67079)

New stock arrived and has been added to ICS. Will be stored in the totes in the TCS LVEA cabinet. 

  • ITMX: Superluminescent Diode QSDM-790-5 
    • S/N 11.21.380
    • S/N 11.21.382
    • S/N 05.21.346 (note the data sheet is labeled 04.21.346 but QPhotonics noted this is a typo) 
  • ITMY: Superluminescent Diode QSDM-840-5
    • S/N 11.21.303
camilla.compton@LIGO.ORG - 15:33, Thursday 10 August 2023 (72139)
  • ITMX: Superluminescent Diode QSDM-790-5 
    • S/N 06.18.002 - used spare
    • S/N 11.21.380
    • S/N 11.21.382
    • S/N 05.21.346 - Installed July 2023 71476
    • S/N 07.14.255 Old sled, removed 71476
  • ITMY: Superluminescent Diode QSDM-840-5
    • S/N 03.20.479 
    • S/N 06.16.005 
    • S/N 11.21.303 - Installed July 2023 71476
    • S/N 11.17.127 Old sled, removed 71476

ISC has been updated. As of August 2023, have 2 spare SLEDs for each ITM HWS.  

camilla.compton@LIGO.ORG - 14:41, Tuesday 10 October 2023 (73373)
  • ITMX Superluminescent Diode QSDM-790-5 
    • S/N 06.18.002 - used spare
    • S/N 11.21.380 - Installed Oct 2023 73371
    • S/N 11.21.382
    • S/N 05.21.346 - Old sled, removed  73371
    • S/N 07.14.255 Old sled, removed 71476
  • ITMY: Superluminescent Diode QSDM-840-5
    • S/N 03.20.479 - Installed Oct 2023 73371
    • S/N 06.16.005 
    • S/N 11.21.303 - Old sled, removed  73371
    • S/N 11.17.127 Old sled, removed 71476

ISC has been updated. As of October 2023, have 1 spare SLEDs for each ITM HWS, with more ordered.  

camilla.compton@LIGO.ORG - 15:31, Wednesday 06 December 2023 (74645)

Spare 8240nm SLEDs QSDM-840-5 09.23.313 and QSDM-840-5 09.23.314 arrived and will be placed in the TCS cabinets on Tuesday. We are expecting qty 2 790nm SLEDs too. 

camilla.compton@LIGO.ORG - 16:26, Thursday 14 March 2024 (76393)

Spare 790nm SLEDs QSDM-790-5--00-01.24.077 and QSDM-790-5--00-01.24.079 arrived and will be placed in the TCS cabinets on Tuesday. 

camilla.compton@LIGO.ORG - 16:12, Monday 09 June 2025 (84906)

In 84417, we swapped:

The removed SLEDs have been dispositioned, DEFECT-TCS-7839.