AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
EDI_PSA
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Entry time:
Thu Apr 3 19:29:07 2025
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Given very poor fit using line + power law + line, changes were made to the fitting algorithm. - Starting paramters optimised for new typical wave shape - Reverted to 3 lines, since signals are faster - Subtracted wave minimum from all wave points to have a more realistic chi2 estimate - Discarded all waves where 2nd half of signal > 1st half of signal. Should correspond to pick-up / noise Fit: 3 lines Free parameters: 2x boundary points between lines Algorithm: Nelder-Mead, 20 iterations. Attach 1: Wave amplitudes Attach 2: Rise times No major differences vs. power law method, but note candidate electron peak in rise time spectrum is now sharper. Attach 3-9: Waveforms with H~90 and increasing rise times. Note fit shown are via Solver's GRG, not NM. Fits in waves 1-4 give same result for GRG and NM. Fit in wave 5: NM-> H72 t102 vs. GRG-> H80 t25 Fit in wave 6: NM-> H96 t128 vs. GRG-> H90 t23 GRG risetimes are more realistic. This appears to be due to very short baseline pre-rise. Will increase in next run. Fit in wave 7 is rare pile-up event. Code cannot yet cope. Bad fit.
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