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← Revision 29 as of 2025-07-02 02:26:39 ⇥
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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 || || |
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| || DC supply || KEPCO || Cooling Fan is Shattered and Power Supply is Burnt. elog 16779|| || https://nodus.ligo.caltech.edu:8081/40m/16779|| | || 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|| |
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| || Phillips PM5183 Signal Gen. (NC: 9445 051 93708 && PropertyTag: C20365 || Error 3 Displays on the screen. Still outputs , but no idea what the error is. || || || || | || 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 |
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UPS batteries |
RBC55 (For reference, PO #S625443) |
~$420 |
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SR560 batteries |
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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 |
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~$9000 |
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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 |
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SR785 #2 (SN:46020 && Property Tag: C21593) |
CH1 input is flakey AND Input range does not get down below -14dB |
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ECA05082446020 && $2,152.50 |
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SRS DS345 (SN:40166) |
“Offset o Error” displays on screen. Only Offset increases but does not generate a signal. Output is broken. |
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ECA05082440166 && $1,537.50 |
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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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