| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2742
|
Wed Mar 31 15:31:53 2010 |
steve | Update | PSL | Reference Cavity RF PD base upgraded |
|
|
|
2759
|
Sat Apr 3 11:35:47 2010 |
rana | Configuration | PSL | Reference Cavity PD Noise Spectrum | The units on this
plot are completely bogus - we know that
the thermal noise from the resonant part |
|
|
2760
|
Sat Apr 3 16:07:40 2010 |
Alberto | Configuration | PSL | Reference Cavity PD Noise Spectrum | I was aware of a problem on those
units since I acquired the data. Then it
wasn't totally clear to me which were the |
|
|
2805
|
Mon Apr 19 05:54:50 2010 |
rana | Configuration | PSL | RC Temperature Servo Turned OFF temporarily | In order to measure the transfer function
of the RC cavity's foam, I've turned off
the servo so that the room temperature noise |
|
|
2810
|
Mon Apr 19 16:31:42 2010 |
Kevin | Update | PSL | Innolight 2W Laser | Koji and Kevin
We unpacked the Innolight 2W laser,
took an inventory, and scanned the operations |
|
|
2812
|
Tue Apr 20 07:48:42 2010 |
steve | Update | PSL | ion pump HV turned on | We found ref-cavity HV was off yesterday
afternoon. It was turned back on. |
|
|
2822
|
Tue Apr 20 20:15:37 2010 |
Kevin | Update | PSL | Innolight 2W Output Power vs Injection Current | Koji and Kevin measured the output power
vs injection current for the Innolight 2W
laser. |
|
|
2828
|
Wed Apr 21 21:56:27 2010 |
Kevin | Update | PSL | Innolight 2W Vertical Beam Profile | Koji and Kevin measured the vertical beam
profile of the Innolight 2W laser at one
point. |
|
|
2829
|
Wed Apr 21 22:11:48 2010 |
rana | Update | PSL | Innolight 2W Vertical Beam Profile | Back in Gainesville in 1997, I learned
how to do this using the chopper wheel. |
|
|
2830
|
Wed Apr 21 23:35:37 2010 |
Koji | Update | PSL | Innolight 2W Vertical Beam Profile | Good fit. I assumed sqrt(x) is a typo of
sqrt(2).
|
|
|
2834
|
Thu Apr 22 21:42:24 2010 |
Alberto | Update | PSL | Innolight 2W Vertical Beam Profile |
What kind of fit did you use?
How are the uncertainties in the parameters |
|
|
2837
|
Sat Apr 24 15:05:41 2010 |
Kevin | Update | PSL | 2W Vertical Beam Profile | The vertical beam profile of the Innolight
2W laser was measured at eight points along
the axis of the laser. |
|
|
2838
|
Sat Apr 24 15:50:47 2010 |
Koji | Update | PSL | re: 2W Vertical Beam Profile | 1. The vertical axis should start from
zero. The horizontal axis should be extended
so that it includes the waist. See Zach's |
|
|
2846
|
Mon Apr 26 16:51:37 2010 |
Kevin | Update | PSL | re: 2W Vertical Beam Profile | I tried Koji's suggestions for improving
the fit to the vertical beam profile; however,
I could not improve the uncertainties in |
|
|
2847
|
Mon Apr 26 17:34:31 2010 |
Koji | Update | PSL | re: 2W Vertical Beam Profile | Give me the plot of the fit, otherwise
I am not convinced.
|
|
|
2851
|
Tue Apr 27 15:29:16 2010 |
Kevin | Update | PSL | re: 2W Vertical Beam Profile | I thought that the micrometer I was using
to move the razor through the laser beam
was metric; however, it is actually english. |
|
|
2857
|
Wed Apr 28 14:22:36 2010 |
Kevin | Update | PSL | re: 2W Vertical Beam Profile | I used the Mathematica CurveFit package
that we use in Ph6/7 to make the fits for
the beam profile data. I wrote two functions |
|
|
2859
|
Wed Apr 28 16:15:02 2010 |
Kevin | Update | PSL | Accelerometer Calibration | Koji, Steve, and Kevin looked into calibrating
the Wilcoxon accelerometers. Once calibrated,
the accelerometers will be used to monitor |
|
|
2873
|
Mon May 3 17:49:41 2010 |
rana | Configuration | PSL | RC Temperature Servo Turned OFF temporarily |
|
|
|
2875
|
Tue May 4 02:28:38 2010 |
rana | Configuration | PSL | RC Temperature Servo Turned OFF temporarily |
My attempt to passively measure |
|
|
2876
|
Tue May 4 06:32:58 2010 |
alberto | Configuration | PSL | RC Temperature Servo Turned OFF temporarily |
|
|
|
2881
|
Wed May 5 02:37:55 2010 |
rana | Configuration | PSL | RC Temperature Servo Turned OFF temporarily |
|
|
|
2883
|
Wed May 5 16:58:21 2010 |
Koji | Update | PSL | 2W hooked up to the interlock service | Ben, Steve, and Koji
Ben came to the 40m and hooked up
a cable to the main interlock service. |
|
|
2898
|
Fri May 7 21:55:59 2010 |
kiwamu | Update | PSL | remove Mach-Zehnder | [Koji, Kiwamu]
The |
|
|
2976
|
Mon May 24 16:34:22 2010 |
Kevin | Update | PSL | ND Filters for 2W Beam Profile | I tried to measure the beam profile of
the 2W laser today but ran into problems
with the ND filters. With the measurements |
|
|
3014
|
Sun May 30 13:26:07 2010 |
rana, kiwamu | Update | PSL | new HIGH-LOW value for PMC_TRANS | We changed
the HIGH/LOW values of the PMC_TRANS. |
|
|
3016
|
Sun May 30 15:36:22 2010 |
Alberto | Configuration | PSL | IMC periscope shutter | Two days ago I opened the PSL shutter by
switching the switch on the shutter driver.
That caused the shutter's switch on the medm |
|
|
3028
|
Tue Jun 1 20:40:03 2010 |
Koji | Update | PSL | new HIGH-LOW value for PMC_TRANS | The alarm had kept crying. I reduced the
LOW to be 0.90 and the LOLO
to be 0.85 both in psl.db and with ezcawrite. |
|
|
3030
|
Wed Jun 2 03:24:22 2010 |
Kevin | Update | PSL | 2W Beam Profile | [Rana, Kiwamu, Kevin]
The Innolight 2W beam profile was
measured with the beam scan. A W2-IF-1025-C-1064-45P |
|
|
3032
|
Wed Jun 2 04:27:02 2010 |
Koji | Update | PSL | 2W Beam Profile | This is what I already told to Kevin and
Rana:
A direct output beam is |
|
|
3040
|
Wed Jun 2 22:25:39 2010 |
Kevin | Update | PSL | Low Power 2W Beam Profile | Koji is worried about thermal lensing introducing
errors to the measurement of the 2W beam
profile so I measured the profile at a lower |
|
|
3041
|
Wed Jun 2 22:58:04 2010 |
Kevin | Update | PSL | 2W Second Reflected Beam Profile | [Koji, Kevin]
The profile of the Innolight 2W was
previously measured by measuring the reflected |
|
|
3042
|
Thu Jun 3 00:47:17 2010 |
Kevin | Update | PSL | 2W Beam Profile of Second Reflected Beam | [Koji, Kevin]
The profile of the Innolight 2W was |
|
|
3109
|
Wed Jun 23 18:05:00 2010 |
Koji | Configuration | PSL | FSS SLOWDC should be ~-4.0 | FSS SLOWDC slider is at around 0.
Please someone relock this at ~-4.0 to exploit |
|
|
3110
|
Wed Jun 23 23:08:30 2010 |
rana | Configuration | PSL | FSS SLOWDC should be ~-4.0 |
|
|
|
3163
|
Wed Jul 7 00:15:29 2010 |
tara,Rana | Summary | PSL | power spectral density from RefCav transmitted beam | I measured
the RC transmitted light signals here at
the 40m. I made all connections through |
|
|
3164
|
Wed Jul 7 10:42:29 2010 |
Koji | Summary | PSL | power spectral density from RefCav transmitted beam | How do you calibrate this to Hz/rtHz?
|
|
|
3189
|
Fri Jul 9 20:16:19 2010 |
rana | Summary | PSL | Things I did to the PSL today: Refcav, PMC, cameras, etc. | I re-aligned the beam into the PMC. I got
basically no improvement. So I instead changed
the .LOW setting so that PMCTRANS would no |
|
|
3190
|
Sun Jul 11 20:11:48 2010 |
rana | Summary | PSL | RC trend after the insulation removal | |
|
|
3196
|
Mon Jul 12 14:22:36 2010 |
Jenne | Summary | PSL | Things I did to the PSL today: Refcav, PMC, cameras, etc. |
|
|
|
3210
|
Tue Jul 13 21:04:49 2010 |
tara,rana | Summary | PSL | Transfer function of FSS servo | I
measured FSS's open loop transfer function.
|
|
|
3232
|
Thu Jul 15 19:27:04 2010 |
rana | Summary | PSL | RC trend after the insulation removal | |
|
|
3240
|
Fri Jul 16 20:25:52 2010 |
Megan | Update | PSL | Reference Cavity Insulation | Rana and I
1) took the temperature sensors off
the reference cavity; |
|
|
3241
|
Fri Jul 16 23:53:27 2010 |
Rana | Update | PSL | Reference Cavity Insulation | From the trend, it seems that the Reference
Cavity's temperature servo is working fine
with the new copper foil. I was unable to |
|
|
3260
|
Wed Jul 21 15:43:38 2010 |
Megan | Summary | PSL | Copper Layer Thickness on the Reference Cavity | Using the equation for thermal resistance
Rthermal = L/(k*A)
where k is the thermal conductivity |
|
|
3268
|
Thu Jul 22 14:07:20 2010 |
kiwamu | Update | PSL | PSL front end machine | It
looks like something wrong happened around
the PSL front end. One |
|
|
3269
|
Thu Jul 22 15:59:29 2010 |
Alberto | Update | PSL | PSL front end machine |
|
|
|
3270
|
Thu Jul 22 18:18:54 2010 |
Alberto | Update | PSL | Problem Solved |
|
|
|
3271
|
Fri Jul 23 00:13:11 2010 |
rana | Update | PSL | Problem NOT REALLY Solved | So...who was working around the PSL rack
this morning and afternoon? Looks like there was |
|
|
3272
|
Fri Jul 23 08:15:59 2010 |
steve | Update | PSL | ref cavity ion pump | The ref cavity ion pump was running at
7.7kV instead of 5kV
This Digitel SPC-1 20 l/s ion pump |
|