Double EndY Station Measurement!
We did the Same Measurement twice in the same configuration to determine if there would be any changes from one hour to the next.
First ENDY Station Measurement:
During the Tuesday maintenace, the PCAL team(Rick Savage & Tony Sanchez) went to ENDY with Working Standard Hanford aka WSH(PS4) and took End station measurements.
The ENDY Station Measurements were carried out according to the procedure outlined in Document LIGO-T1500062-v15, Pcal End Station Power Sensor Responsivity Ratio Measurements: Procedures and Log, and was completed by 10:30 am.
First Measurement Log
First thing we did is take a picture of the beam spot before anything is touched!
Martel votlage injection into the DAQ:
Martel_Voltage_Test.png graph. We also did a measurement of the Martel's voltages in the PCAL lab to calculate the ADC conversion factor, which is included on the above document.
After the Martel measurement the procedure walks us through the steps required to make a series of plots while the Working Standard(PS4) is in the Transmitter Module. These plots are shown in WS_at_TX.png.
Next steps include: The WS in the Receiver Module, These plots are shown in WS_at_RX.png.
Followed by TX_RX.png which are plots of the Tranmitter module and the receiver module operation without the WS in the beam path at all.
The last picture is of the Beam spot after we had finished the measurement.
All of this data is then used to generate LHO_ENDY_PD_ReportV2.pdf which is attached, and a work in progress in the form of a living document.
Note: both measurements are on this Report.
NONE of this data and Analysis has been commited to the SVN as I have been Locked out of the SVN.
But it would have gone here: https://svn.ligo.caltech.edu/svn/aligocalibration/trunk/Projects/PhotonCalibrator/measurements/LHO_ENDY/
Then we did the measurement again,
Second Measurement Log
Martel plot
WS @ TX
WS @ RX
TX & RX
LHO EY PD Report V2 for the Second measurement
Final Beam Spot
PCAL Lab Responsivity Ratio Measurement:
A WSH/GSHL (PS4/PS5)FrontBack Responsivity Ratio Measurement was ran, analyzed, and pushed to the SVN.
The analysis of this measurement produces 4 PDF files which we use to vet the data for problems.
raw_voltages.pdf
avg_voltages.pdf
raw_ratios.pdf
avg_ratios.pdf
NONE of this lab data and Analysis has been commited to the SVN.
Obligitory BackFront PS4/PS5 Responsivity Ratio:
A WSH/GSHL (PS4/PS5)BF Responsivity Ratio measurement was ran, analyzed, and pushed to the SVN.
The analysis of this measurement produces 4 PDF files which we use to vet the data for problems.
raw_voltages2.pdf
avg_voltages2.pdf
raw_ratios2.pdf
avg_ratios2.pdf
This adventure has been brought to you by Rick Savage & Tony Sanchez.
