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From the DOE Hanford Operations Office: Due to the snow currently falling on the Hanford Site and surrounding communities, non-essential Hanford employees will be released from work early today. Only essential employees needed to maintain minimum safe operations are to remain at work through the remainder of the shift. To alleviate traffic congestion, please adhere to the staggered schedule below. • 200 East Area and all Areas South of the Wye Barricade, including employees working in Richland, 12:45 pm • 200 West Area and 100 Areas, 1:30 pm The Rattlesnake Barricade will remain open until 6:00 pm. Employees must check with their manager prior to leaving, are urged to use caution when driving home, and be prepared for adverse weather or road conditions. Employees are advised to stay tuned to area radio stations for possible road closures, which could affect travel. In addition, swing shift and graveyard shift has been cancelled tonight for non-essential employees. Only essential employees needed to maintain minimum safe operations are to report to work at the usual time. For updated information call the Hanford Hotline at 376-9999 or log-on to the Hanford Home Page at www.hanford.gov.
Weather
Station# 12 (WYEB) at 550 ft above MSL
Time: 15:30:00 PST Date: 1/10/2017
Ave Wind Direction = 316
Ave Wind Speed = 15
Max Wind Speed = 21
Celsius
Ave Temp = 25.9 -3.42
Max Temp = 26.0 -3.31
Min Temp = 25.4 -3.64
Wind Chill = 13.8
Rain Gauge = 0.00
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jeffrey.kissel@LIGO.ORG - posted 13:59, Wednesday 11 January 2017 (33153)
New DARM Loop Model for ER10 and O2a (2016-11-12 to 2016-12-22) Including Analog AA/AI Filter Bug Fixes
J. Kissel I've completed creating an updated parameter set for the matlab DARM loop model that contains the updates from the fit of the 2016-11-12 calibration reference measurements (see LHO aLOG 31433 for original measurement set, and LHO aLOG 32989 for updated analysis). I've compared the model output against those measurements using ${CalSVN}/aligocalibration/trunk/Runs/ER10/H1/Scripts/DARMOLGTFs/compareDARMOLGTFs.m (r4123, ls: r4123) Results are attached. The agreement is excellent. I also attached the sensing and actuation function fit parameter results, just for completeness -- including nlinfit results (and because LHO aLOG 32989 has some typos, only corrected in its comment, LHO aLOG 33090). Former Value MAP (95% C.I.) MAP (95% C.I.) 2016-11-12 2016-11-12 (nlinfit) 2016-11-12 (MCMC) Optical Gain K_C [ct/m] 1.15e6 1.166e6 (0.0003e6) 1.164e6 (0.0002e6) Couple Cav. Pole Freq. f_c [Hz] 346.7 347.2 (5.8) 346.7 (2.7) Residual Sensing Delay tau_C [us] 2.3 2.12 (5.5) 2.3 (2.3) SRC Detuning Spring Freq. f_s [Hz] 7.4 7.38 (0.3) 7.38 (0.16) Inv. Spring Qual. Factor 1/Q_s [ ] 0.05 0.046 (0.013) 0.046 (0.008) UIM/L1 Actuation Strength K_UIM [N/ct] 8.164e-8 n/a 8.104e-8 (0.2%) PUM/L2 Actuation Strength K_PUM [N/ct] 6.841e-10 n/a 6.773e-10 (0.04%) UIM/L3 Actuation Strength K_TST [N/ct] 4.389e-12 n/a 4.346e-12 (0.05%) Not only is the model in excellent agreement with the measurement, the nlinfit fit parameter values are in excellent agreement with the MCMC values with the sensing function. As with the updated / new 2017-01-03 model (LHO aLOG 33004), I've used the nlinfit values to update the sensing function parameter set. For the actuator coefficients, I've again used ${CalSVN}/aligocalibration/trunk/Runs/ER10/H1/Scripts/FullIFOActuatorTFs/ getActValuesForParamsFile.m (r4126, lc: r4126) and the clunky process described in LHO aLOG 33092. Also, I've run the fitting algorithms on *only* the reference measurement data set (i.e. I did not run on multiple measurements worth, assuming no and/or compensating for time-dependence). I've committed the following model pieces to the Cal SVN repo: (r = svn revision, lc = last changed revision) /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/ O2/DARMmodel/src/ DARMmodel.m (r4093, lc: r3511) computeSensing.m (r4093, lc: r4025) computeActuation.m (r4093, lc: r4003) Param Files O2/Common/params/ IFOindepParams.conf (r4042, lc: r4002) ER10/H1/params/ H1params.conf (r4121, lc: r4121) ER10/H1/params/2016-11-12/ H1params_2016-11-12.conf (r3944, lc: 3786) measurements_2016-11-12_sensing.conf (r4122, lc: r4122) measurements_2016-11-12_ETMY_L1_actuator.conf (r3944, lc: r3810) measurements_2016-11-12_ETMY_L2_actuator.conf (r3944, lc: r3810) measurements_2016-11-12_ETMY_L3_actuator.conf (r3944, lc: r3810) More notes: - I did not update the export of foton implementation of the inverse sensing function. This is because (a) DCS "offline" calibration filters DARM_ERR and DARM_CTRL directly with FIR filters. For the DARM_ERR filter, the inverse sensing function is computed directly from the matlab model and does not suffer from IIR filter warping, and does not need low- or high- frequency cutoffs that the front-end pipeline must have for causality. (b) If we *were* to regenerate GDS calibration, which correct the front-end for its flaws -- including this inverse sensing function filter -- then we would need to use exactly what filter was in place, and the ${CalSVN}/aligocalibration/trunk/Runs/ ER10/H1/Measurements/Foton/ 2016-12-07_H1CALCS_InverseSensingFunction_Foton_SRCD-2N_Gain_tf.txt (r3921, lc: r3921) file is what was used, at least from 2016-12-07 to 2016-12-22, until it was *actually* updated on 2017-01-03. What to do from here: - Use the loop model to push new EPICs records that document model values at calibration line frequencies - Use the new loop model to generate DCS FIR filters to recalibrate the all data from the pre-winter break from raw DARM_ERR and DARM_CTRL. - Push hard for uncertainty estimations for both the first part of O2 and data post-winter break.
Non-image files attached to this report
