 Thu May 20 17:03:50 2021, Koji, General, General, SRS LCR meter SRS720 borrowed from Downs 
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Item loan: SRS LCR meter SRS720 borrowed from Downs. The unit is at the 40m right now for testing with an excelitas PD. Once it is done, the setup will
be moved to the OMC lab for testing the high QE PDs |
 Sun May 30 15:17:16 2021, Koji, General, General, DCPD AF capacitance measirement
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Attachment 1: System diagram. The reverse bias voltage is controlled by DS335. This can produce a voltage offset up to 10V. A G=+2 opamp
circuit was inserted so that a bias of up to +15V can be produced. The capacitances of the photodiodes were measured with SR720 LCR meter with a probe.
DS335 and SR720 were controlled from PC/Mac via serial connections. |
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Sun May 30 15:32:56 2021, Koji, General, General, DCPD AF capacitance measirement
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Measurement result:
The capacitance at no bias was 460~500pF. This goes down to below 300pF at 1.0~1.5V reverse bias. At maximum +15V, the capacitance goes down
to 200~220pF. |
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Wed Jul 7 14:21:50 2021, Stephen, Supply, General, OMC Unit 4 Build Machined Parts
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More explicit insights into the inventory for the Unit 4 build. Image of inventory included below.
Machined Parts:
New fabrication = Contents of Storage-11112 are consistent with |
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Thu Jun 23 21:03:33 2022, Koji, Facility, General, Moving the small optical table to CAML (TCS Lab)
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I've cleared the small optical table and wondered how to move it out of the room. Fortunately, the north side of the big table had wide enough clearance
and let the 36" wide table go through. This was easy without moving other heavy stuff.
From here to the door, a bit of work is required. A possibility is to roll the laser blocking wall to the south side of the big table. This will |
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Fri Dec 18 15:33:24 2015, Koji, General, Loan / Lending, Loan from Rich
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Loan Record: I borrowed a PD can opener from Rich => Antonio Returned Sep 9, 2016
Tungsten Carbide Engraver (permanently given to the OMC lab)
KEITHLEY SOURCE METER + Laptop |
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Thu Feb 18 21:08:32 2016, Koji, General, Loan / Lending, (all returned) Antonio loan
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| Antonio borrowed: Rich's PD cutter (returned), Ohir power meter(returned), Thorlabs power meter head, Chopper |
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Tue Apr 5 18:14:55 2016, Koji, General, Loan / Lending, QPD Lending Crackle
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Xiaoyue
QPD head
X-Z stage |
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Thu May 3 21:45:58 2018, awade, General, Loan / Lending, Borrowed toaster oven
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| I’ve borrowed the black and decker toaster oven to dry some sonicated parts. It is temporarly located in the QIL lab. |
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Tue Oct 22 15:54:59 2019, Koji, Electronics, Loan / Lending, Borrowed LB1005 from Cryo Cav
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From Cryo Cav setup
Borrowed LB1005 Servo box -> OMC
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Mon Aug 10 15:34:04 2020, Koji, Facility, Loan / Lending, Glue bake oven
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| Black and Decker Glue Baking Oven came back to the OMC lab on Aug 10, 2020, Georgia had lent the unit for the SAMS assembly/testing. |