Today Francisco and I went down to the EX End station to do a End Station measurement using PS4.
We followed our trusty T1500062 Procedure until aalmost the end, Because Francisco needed to do a beam movement After the ES measurement.
The PS4/PS5 lab measurement used for this was made on 2024-12-10. I did make a PS4/PS5 measurement yesterday, but that was done using the new Lab method. This means this Lab measurement is not availible on the master branch in the form required for the ES measurement analysis tools to use it properly.
python generate_measurement_data.py --WS "PS4" --date '2024-12-10'
Reading in config file from python file in scripts
../../../Common/O4PSparams.yaml
PS4 rho, kappa, u_rel on 2024-12-10 corrected to ES temperature 299.6 K :
-4.702394808525094 -0.0002694340454223 4.3277259408925024e-05
Copying the scripts into tD directory...
Connected to nds.ligo-wa.caltech.edu
martel run
reading data at start_time: 1422121080
reading data at start_time: 1422121480
reading data at start_time: 1422121800
reading data at start_time: 1422122150
reading data at start_time: 1422122510
reading data at start_time: 1422122865
reading data at start_time: 1422122980
reading data at start_time: 1422123840
reading data at start_time: 1422124200
Ratios: -0.4589607901775236 -0.4689807789761762
writing nds2 data to files
finishing writing
Background Values:
bg1 = 9.269796; Background of TX when WS is at TX
bg2 = 5.192082; Background of WS when WS is at TX
bg3 = 9.119009; Background of TX when WS is at RX
bg4 = 5.361966; Background of WS when WS is at RX
bg5 = 9.037959; Background of TX
bg6 = 0.508605; Background of RX
The uncertainty reported below are Relative Standard Deviation in percent
Intermediate Ratios
RatioWS_TX_it = -0.458961;
RatioWS_TX_ot = -0.468981;
RatioWS_TX_ir = -0.453407;
RatioWS_TX_or = -0.464488;
RatioWS_TX_it_unc = 0.085535;
RatioWS_TX_ot_unc = 0.091457;
RatioWS_TX_ir_unc = 0.089022;
RatioWS_TX_or_unc = 0.094409;
Optical Efficiency
OE_Inner_beam = 0.988084;
OE_Outer_beam = 0.990574;
Weighted_Optical_Efficiency = 0.989329;
OE_Inner_beam_unc = 0.057445;
OE_Outer_beam_unc = 0.061558;
Weighted_Optical_Efficiency_unc = 0.084198;
Martel Voltage fit:
Gradient = 1636.809688;
Intercept = 0.225736;
Power Imbalance = 0.978635;
Endstation Power sensors to WS ratios::
Ratio_WS_TX = -1.077654;
Ratio_WS_RX = -1.392043;
Ratio_WS_TX_unc = 0.053955;
Ratio_WS_RX_unc = 0.041453;
=============================================================
============= Values for Force Coefficients =================
=============================================================
Key Pcal Values :
GS = -5.135100; Gold Standard Value in (V/W)
WS = -4.702395; Working Standard Value
costheta = 0.988362; Angle of incidence
c = 299792458.000000; Speed of Light
End Station Values :
TXWS = -1.077654; Tx to WS Rel responsivity (V/V)
sigma_TXWS = 0.000581; Uncertainity of Tx to WS Rel responsivity (V/V)
RXWS = -1.392043; Rx to WS Rel responsivity (V/V)
sigma_RXWS = 0.000577; Uncertainity of Rx to WS Rel responsivity (V/V)
e = 0.989329; Optical Efficiency
sigma_e = 0.000833; Uncertainity in Optical Efficiency
Martel Voltage fit :
Martel_gradient = 1636.809688; Martel to output channel (C/V)
Martel_intercept = 0.225736; Intercept of fit of Martel to output (C/V)
Power Loss Apportion :
beta = 0.998895; Ratio between input and output (Beta)
E_T = 0.994100; TX Optical efficiency
sigma_E_T = 0.000419; Uncertainity in TX Optical efficiency
E_R = 0.995201; RX Optical Efficiency
sigma_E_R = 0.000419; Uncertainity in RX Optical efficiency
Force Coefficients :
FC_TxPD = 7.902395e-13; TxPD Force Coefficient
FC_RxPD = 6.183646e-13; RxPD Force Coefficient
sigma_FC_TxPD = 5.429896e-16; TxPD Force Coefficient
sigma_FC_RxPD = 3.673209e-16; RxPD Force Coefficient
data written to ../../measurements/LHO_EndX/tD20250128/
Martel measurement
WS in the Transmitter module.
WS in the Rx module
WS in the Rx module with Both Beams
PCAL ES trends pdf.
More data can be found here: https://git.ligo.org/Calibration/pcal/-/tree/master/O4/ES/measurements/LHO_EndX/tD20250128?ref_type=heads
