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← Revision 29 as of 2025-07-02 02:26:39 ⇥
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| Deletions are marked like this. | Additions are marked like this. |
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| || Item || Description || Frequency || Cost per period || ELOG Link || || N2 gas cylinders || || || || || || Storage Area || || || || || |
|| Item || Description || Frequency || Cost per period || || Storage Area || || || || || Zero-Grade Air Cylinders|| Airgas Part #:UZI300 || 4 Cylinders each Vent || $164.67/Cylinder ~ $658.68/Vent || Obsolete || Nitrogen Cylinders || Airgas Part #:NI 300|| 8 Cylinders per month || $159.56/Month || |
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| || Oplev lasers || Lumentum xxxx || Link here || ??? || || || UPS batteries || || Link here || ??? || || || SR560 batteries || || Link here || ??? || || |
|| Oplev lasers || Lumentum 1103P || [[https://www.edmundoptics.com/p/model-1103p-2mw-linear-polarization-lumentum-hene-laser/18816/|Lumentum 1103P]] || ~ $900 - $1000 || || || UPS batteries || RBC55 (For reference, PO #S625443) || [[https://www.bhphotovideo.com/c/product/1117506-REG/apc_rbc55_replacement_battery_cartridge_55.html| APC Replacement Battery Cartridge]] || ~$420 || || || SR560 batteries || || Link here || ??? || || |
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| == Irregular maintenance == | == Broken instruments 2025 List == |
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| Broken instrument, broken HVAC, etc | || TP2 Agilent V-70D / TwisTorr 74 || Does not run also the controller has no serial connection || || ~$9000 || || |
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| || Item || Description || Last maintenance date || Cost per work || ELOG Link || | == Broken instruments 2024 List == Here are instruments in the 40m Lab the need maintenance. Some of these instruments cost more to fix than to purchase a new instrument with the Same function. || Item || Description || Last maintenance date || RMA && Estimated Cost of Repair || ELOG Link || |
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| || SR785 || || || || || || DS345 || || || || || |
|| SR785 #1 (SN:46756 && Property Tag: C32239)|| High Voltage leakage into CH2. elog 18006 || This was repaired on July 1, 2024 || ECA05082446756 && $2,152.50 || https://nodus.ligo.caltech.edu:8081/40m/18006 || || SR785 #2 (SN:46020 && Property Tag: C21593)|| CH1 input is flakey AND Input range does not get down below -14dB|| || ECA05082446020 && $2,152.50|| || || SRS DS345 (SN:40166) || “Offset o Error” displays on screen. Only Offset increases but does not generate a signal. Output is broken. || || ECA05082440166 && $1,537.50 || || || DC supply || KEPCO || Cooling Fan is Shattered and Power Supply is Burnt. elog 16779 eWasted 2025/7/2|| || https://nodus.ligo.caltech.edu:8081/40m/16779|| || HV supplies || KEPCO || || || || || Yarm LSC DC supply || A 15V KEPCO Broken - replaced with Sorensen. A spare KEPCO in VOPO lab || || || || || Tektronix TDS3034B || Screen glitches out during usage elog 18050 || || https://nodus.ligo.caltech.edu:8081/40m/18050 || || 1201 Low Noise Pre Ampl. || || || || || || Phillips PM5183 Signal Gen. (NC: 9445 051 93708 && PropertyTag: C20365 || eWasted 2025/7/2 || || || || |
40m Lab Maintenance
We list regular/semi-regular/irregular maintenance items with cost here.
Regular maintenance
Regular (annual/monthly) costs
Item |
Description |
Frequency |
Cost per period |
Storage Area |
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Zero-Grade Air Cylinders |
Airgas Part #:UZI300 |
4 Cylinders each Vent |
$164.67/Cylinder ~ $658.68/Vent |
Obsolete
Nitrogen Cylinders |
Airgas Part #:NI 300 |
8 Cylinders per month |
$159.56/Month |
Semi-regular maintenance
We know someday we will need replacement. Maintenance records should be kept in an independent page
Item |
Description |
Frequency |
Cost per replacement |
ELOG Link |
Oplev lasers |
Lumentum 1103P |
~ $900 - $1000 |
|
|
UPS batteries |
RBC55 (For reference, PO #S625443) |
~$420 |
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SR560 batteries |
|
Link here |
??? |
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Broken instruments 2025 List
TP2 Agilent V-70D / TwisTorr 74 |
Does not run also the controller has no serial connection |
|
~$9000 |
|
Broken instruments 2024 List
Here are instruments in the 40m Lab the need maintenance. Some of these instruments cost more to fix than to purchase a new instrument with the Same function.
Item |
Description |
Last maintenance date |
RMA && Estimated Cost of Repair |
ELOG Link |
NPRO |
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HVAC |
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SR785 #1 (SN:46756 && Property Tag: C32239) |
High Voltage leakage into CH2. elog 18006 |
This was repaired on July 1, 2024 |
ECA05082446756 && $2,152.50 |
|
SR785 #2 (SN:46020 && Property Tag: C21593) |
CH1 input is flakey AND Input range does not get down below -14dB |
|
ECA05082446020 && $2,152.50 |
|
SRS DS345 (SN:40166) |
“Offset o Error” displays on screen. Only Offset increases but does not generate a signal. Output is broken. |
|
ECA05082440166 && $1,537.50 |
|
DC supply |
KEPCO |
Cooling Fan is Shattered and Power Supply is Burnt. elog 16779 eWasted 2025/7/2 |
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HV supplies |
KEPCO |
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Yarm LSC DC supply |
A 15V KEPCO Broken - replaced with Sorensen. A spare KEPCO in VOPO lab |
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Tektronix TDS3034B |
Screen glitches out during usage elog 18050 |
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||
1201 Low Noise Pre Ampl. |
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Phillips PM5183 Signal Gen. (NC: 9445 051 93708 && PropertyTag: C20365 |
eWasted 2025/7/2 |
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