Dripta and I went to EY yesterday (Feb 3rd) to do both an ES and a TX module maintanence. We followed T1500062-v21 with out much deviation until the end when we started the TX module maint.

Obligitory Before and After beam spots on the apature of RX sphere.

Data Analysis: 
python3 generate_measurement_data.py --WS PS4 --date 2025-11-03 
Reading in config file from python file in scripts
../../../Common/O4PSparams.yaml
PS4 rho, kappa, u_rel on 2025-11-03 corrected to ES temperature 299.4 K :
-4.701912257515925 -0.0002694340454223 2.686163396659873e-05
Copying the scripts into tD directory...
Connected to h1daqnds1
martel run
reading data at start_time:  1454177475
reading data at start_time:  1454177902
reading data at start_time:  1454178300
reading data at start_time:  1454179000
reading data at start_time:  1454179400
reading data at start_time:  1454179750
reading data at start_time:  1454179900
reading data at start_time:  1454180530
reading data at start_time:  1454180888
Ratios: -0.5341330662181019 -0.5436335114505099
writing nds2 data to files
finishing writing
Background Values:
bg1 =        18.796205; Background of TX when WS is at TX
bg2 =        5.033949; Background of WS when WS is at TX
bg3 =        18.801656; Background of TX when WS is at RX
bg4 =        5.198797; Background of WS when WS is at RX
bg5 =        18.803508; Background of TX
bg6 =        -0.514446; Background of RX

The uncertainty reported below are Relative Standard Deviation in percent 

Intermediate Ratios
RatioWS_TX_it      = -0.534133;
RatioWS_TX_ot      = -0.543634;
RatioWS_TX_ir      = -0.526715;
RatioWS_TX_or      = -0.535124;
RatioWS_TX_it_unc  = 0.054072;
RatioWS_TX_ot_unc  = 0.053357;
RatioWS_TX_ir_unc  = 0.053158;
RatioWS_TX_or_unc  = 0.054774;
Optical Efficiency
OE_Inner_beam                      = 0.986243;
OE_Outer_beam                      = 0.984385;
Weighted_Optical_Efficiency        = 0.985314;

OE_Inner_beam_unc                  = 0.041515;
OE_Outer_beam_unc                  = 0.041813;
Weighted_Optical_Efficiency_unc    = 0.058922;

Martel Voltage fit:
Gradient      = 1637.852893;
Intercept     = 0.265584;

 Power Imbalance = 0.982524;

Endstation Power sensors to WS ratios::
Ratio_WS_TX                        = -0.927845;
Ratio_WS_RX                        = -1.384820;

Ratio_WS_TX_unc                    = 0.044117;
Ratio_WS_RX_unc                    = 0.038945;

=============================================================
============= Values for Force Coefficients =================
=============================================================

Key Pcal Values :
GS           =      -5.135100; Gold Standard Value in (V/W)             
WS           =      -4.701912; Working Standard Value             

costheta     =      0.988362; Angle of incidence
c            =      299792458.000000; Speed of Light
             
End Station Values : 
TXWS         =        -0.927845; Tx to WS Rel responsivity (V/V)
sigma_TXWS   =        0.000409; Uncertainity of Tx to WS Rel responsivity (V/V)
RXWS         =        -1.384820; Rx to WS Rel responsivity (V/V)
sigma_RXWS   =        0.000539; Uncertainity of Rx to WS Rel responsivity (V/V)

e            =        0.985314; Optical Efficiency
sigma_e      =        0.000581; Uncertainity in Optical Efficiency

Martel Voltage fit : 
Martel_gradient         =        1637.852893; Martel to output channel (C/V)
Martel_intercept   =        0.265584; Intercept of fit of     Martel to output (C/V)

Power Loss Apportion : 
beta          =        0.998844; Ratio between input and output (Beta)  
E_T          =        0.992056; TX Optical efficiency 
sigma_E_T          =        0.000292; Uncertainity in TX Optical efficiency 
E_R          =        0.993204; RX Optical Efficiency 
sigma_E_R          =        0.000293; Uncertainity in RX Optical efficiency 

Force Coefficients : 
FC_TxPD          =        9.154540e-13; TxPD Force Coefficient 
FC_RxPD          =        6.225064e-13; RxPD Force Coefficient 
sigma_FC_TxPD          =        4.888564e-16; TxPD Force Coefficient 
sigma_FC_RxPD          =        3.063586e-16; RxPD Force Coefficient 
data written to ../../measurements/LHO_EndY/tD20260203/