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Tue Sep 10 15:41:37 2019, aaron, Update, IOO, WFS measurements 
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Wed Sep 11 10:26:56 2019, aaron, Update, IOO, WFS measurements
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Wed Sep 11 14:37:43 2019, aaron, Update, IOO, WFS measurements 
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Thu Sep 12 12:42:31 2019, aaron, Update, IOO, WFS measurements 
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Fri Sep 13 10:36:03 2019, aaron, Update, IOO, WFS measurements 
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Mon Sep 16 12:38:59 2019, aaron, Update, IOO, WFS measurements
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Thu Oct 3 11:38:35 2019, aaron, Update, IOO, WFS measurements
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Mon Sep 30 13:20:55 2019, aaron, Update, IOO, shot noise measurement
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Fri Sep 13 10:53:40 2019, aaron, Update, IOO, WFS loop measurements
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Mon Sep 16 05:08:04 2019, rana, Update, IOO, WFS loop measurements 
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Mon Sep 16 11:55:58 2019, rika, Update, IOO, WFS loop measurements
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Tue Sep 17 09:41:48 2019, gautam, Update, IOO, WFS loop measurements
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Tue Sep 17 10:47:44 2019, rika, Update, IOO, WFS loop measurements
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Wed Sep 18 14:45:52 2019, rika, Update, IOO, WFS loop measurements
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Tue Sep 17 10:34:48 2019, aaron, Update, IOO, WFS loop measurements
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Tue Oct 8 20:39:42 2019, aaron, Update, IOO, WFS loop measurements
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Wed Oct 9 09:37:28 2019, aaron, Update, IOO, WFS loop measurements
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Message ID: 14875
Entry time: Fri Sep 13 10:36:03 2019
In reply to: 14874
Reply to this: 14882
14929
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Author: |
aaron |
Type: |
Update |
Category: |
IOO |
Subject: |
WFS measurements |
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[rika, aaron]
We are at it again. Rika is setting up the TF measurement, I'm looking into scripting the WFS sensing matrix measurement we made earlier in the week so we can return to it next week.
Measurement |
file |
parameters |
WFS2_SEG1 / RFPD |
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100 MHz - 500 MHz |
WFS2_SEG1 / RFPD |
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10 MHz - 100 MHz |
WFS2_SEG1 / RFPD |
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100 kHz - 10 MHz |
WFS2_SEG2 / RFPD |
TFAG4395A_13-09-2019_181415.txt |
100 MHz - 500 MHz |
WFS2_SEG2 / RFPD |
TFAG4395A_13-09-2019_180955.txt |
10 MHz - 100 MHz |
WFS2_SEG2 / RFPD |
TFAG4395A_13-09-2019_182918.txt |
100 kHz - 10 MHz |
WFS2_SEG3 / RFPD |
TFAG4395A_13-09-2019_121533.txt |
100 MHz - 500 MHz |
WFS2_SEG3 / RFPD |
TFAG4395A_13-09-2019_123820.txt |
10 MHz - 100 MHz |
WFS2_SEG3 / RFPD |
TFAG4395A_13-09-2019_123243.txt |
100 kHz - 10 MHz |
WFS2_SEG4 / RFPD |
TFAG4395A_13-09-2019_161834.txt
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100 MHz - 500 MHz |
WFS2_SEG4 / RFPD |
TFAG4395A_13-09-2019_170007.txt |
10 MHz - 100 MHz |
WFS2_SEG4 / RFPD |
TFAG4395A_13-09-2019_172001.txt |
100 kHz - 10 MHz |
When we mesuring TF of SEG4, the beam leaking to SEG1 about 1%.
We finished mesurement SEG2-4 and get the figure by running PDH_calibrate.ipynb .
edit: We observed during segment 2 measurements that blocking the beam reduced the DC level of segment 1 by less than 1%, but still clearly observable. As you can see in the plots, something is suspicious about the normalization of these TFs. We took segment 1 data a few days before the other segments, so perhaps we weren't getting the full beam on the reference PD during the later measurements? When I make this measurement for WFS1, I will try to fix some of these problems by choosing different telescoping optics, and I will consider whether removing the QPD heads from their table will improve the measurement. |
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