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ATF eLog |
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Thu Aug 5 09:20:44 2021, Aidan, Laser, 2um Photodiodes, Optical design for 2um PD in new cryo chamber
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Thu Aug 5 12:39:56 2021, Aidan, Laser, 2um Photodiodes, Optical design for 2um PD in new cryo chamber
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Thu Aug 5 14:29:42 2021, Stephen, Laser, 2um Photodiodes, Optical design for 2um PD in new cryo chamber   
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Tue Aug 24 15:01:25 2021, Stephen, Laser, 2um Photodiodes, 2um PD in new cryo chamber
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Thu Aug 26 14:31:46 2021, Aidan, Stephen, Laser, 2um Photodiodes, Incident power calibration of 2um PD in new cryo chamber 
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Fri Aug 27 17:57:30 2021, Stephen, DailyProgress, 2um Photodiodes, Start of PD pumpdown
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Sat Aug 28 07:01:21 2021, Aidan, DailyProgress, 2um Photodiodes, Start of PD pumpdown 
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Sun Aug 29 11:17:43 2021, Aidan, DailyProgress, 2um Photodiodes, Start of PD pumpdown 
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Mon Aug 30 08:04:52 2021, Aidan, DailyProgress, 2um Photodiodes, Monday morning observation of JPL A1 PD cool down
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Message ID: 2657
Entry time: Mon Aug 30 08:04:52 2021
In reply to: 2656
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Author: |
Aidan |
Type: |
DailyProgress |
Category: |
2um Photodiodes |
Subject: |
Monday morning observation of JPL A1 PD cool down |
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Attached are time series of the A1 photodiode temperature (and megastat temperatures) along with the PD response and reference PD measurement of delivered power. The laser is being modulated by a ramp wave (sawtooth) so the response shows the maximum and minimum. The difference between the maximum and minimum trend lines is an indication of the PD response (although the PD is saturating as well at higher intensities so further data analysis is required).
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