PCal team took PS4 to EY again today for the first every April measurement of End Y! Previous Aprils' measurements have apparently all been EndX.
Following T1500062V-18, Nothing really out of the ordinary except I put RX here instead of bolting to the side of the breadboard like I normally do, to see if that has any effect on the load balancing of the RX optical bread board or any impact to the overall measurement during the time when WS was in the RX side.
Beam spot
python3 generate_measurement_data.py --
WS "PS4" --date "2025-03-24"
Reading in config file from python file in scripts
../../../Common/O4PSparams.yaml
PS4 rho, kappa, u_rel on 2025-03-24 corrected to ES temperature 299.4 K :
-4.701550919294612 -0.0002694340454223 4.0632996079052654e-05
Copying the scripts into tD directory...
Connected to nds.ligo-wa.caltech.edu
martel run
reading data at start_time: 1429997850
reading data at start_time: 1429998230
reading data at start_time: 1429998550
reading data at start_time: 1429998990
reading data at start_time: 1429999330
reading data at start_time: 1429999640
reading data at start_time: 1430000100
reading data at start_time: 1430000600
reading data at start_time: 1430000920
Ratios: -0.5349326615859125 -0.5432025342228874
writing nds2 data to files
finishing writing
Background Values:
bg1 = 17.394679; Background of TX when WS is at TX
bg2 = 4.438216; Background of WS when WS is at TX
bg3 = 17.479506; Background of TX when WS is at RX
bg4 = 4.610581; Background of WS when WS is at RX
bg5 = 17.487987; Background of TX
bg6 = -0.718008; Background of RX
The uncertainty reported below are Relative Standard Deviation in percent
Intermediate Ratios
RatioWS_TX_it = -0.534933;
RatioWS_TX_ot = -0.543203;
RatioWS_TX_ir = -0.527567;
RatioWS_TX_or = -0.535369;
RatioWS_TX_it_unc = 0.055737;
RatioWS_TX_ot_unc = 0.055881;
RatioWS_TX_ir_unc = 0.056510;
RatioWS_TX_or_unc = 0.055480;
Optical Efficiency
OE_Inner_beam = 0.985953;
OE_Outer_beam = 0.985408;
Weighted_Optical_Efficiency = 0.985681;
OE_Inner_beam_unc = 0.042868;
OE_Outer_beam_unc = 0.044311;
Weighted_Optical_Efficiency_unc = 0.061653;
Martel Voltage fit:
Gradient = 1637.860873;
Intercept = 0.156301;
Power Imbalance = 0.984776;
Endstation Power sensors to WS ratios::
Ratio_WS_TX = -0.927527;
Ratio_WS_RX = -1.383600;
Ratio_WS_TX_unc = 0.045873;
Ratio_WS_RX_unc = 0.042755;
=============================================================
============= Values for Force Coefficients =================
=============================================================
Key Pcal Values :
GS = -5.135100; Gold Standard Value in (V/W)
WS = -4.701551; Working Standard Value
costheta = 0.988362; Angle of incidence
c = 299792458.000000; Speed of Light
End Station Values :
TXWS = -0.927527; Tx to WS Rel responsivity (V/V)
sigma_TXWS = 0.000425; Uncertainity of Tx to WS Rel responsivity (V/V)
RXWS = -1.383600; Rx to WS Rel responsivity (V/V)
sigma_RXWS = 0.000592; Uncertainity of Rx to WS Rel responsivity (V/V)
e = 0.985681; Optical Efficiency
sigma_e = 0.000608; Uncertainity in Optical Efficiency
Martel Voltage fit :
Martel_gradient = 1637.860873; Martel to output channel (C/V)
Martel_intercept = 0.156301; Intercept of fit of Martel to output (C/V)
Power Loss Apportion :
beta = 0.998844; Ratio between input and output (Beta)
E_T = 0.992240; TX Optical efficiency
sigma_E_T = 0.000306; Uncertainity in TX Optical efficiency
E_R = 0.993389; RX Optical Efficiency
sigma_E_R = 0.000306; Uncertainity in RX Optical efficiency
Force Coefficients :
FC_TxPD = 9.160033e-13; TxPD Force Coefficient
FC_RxPD = 6.229843e-13; RxPD Force Coefficient
sigma_FC_TxPD = 5.093831e-16; TxPD Force Coefficient
sigma_FC_RxPD = 3.305931e-16; RxPD Force Coefficient
data written to ../../measurements/LHO_EndY/tD20250429/
This adventure was brought to you by, Francisco L & Tony S.
