New developments:
- Added local occupancy estimator (this was one request by GSI in the group meeting):
vector<float> loc_occ(all(pad_time_bins), 0);
for every pad_time_bin in tpc_sector{
for pad_time_bin_2 in [time(pad_time_bin) - 20, time(pad_time_bin) + 20] and all_pads_in_ROC(pad_time_bin){
loc_occ[pad_time_bin] += (int)(pad_time_bin_2 > 0);
}
loc_occ[pad_time_bin] /= (all_pads_in_ROC(pad_time_bin) * 41);
}
- Distortion simulation working now: full-system-test, distortion type 2 + slow-realisitic-full-sim + runnumber=311000
- Got ITS-TPC matching + QC to work using the reco_NOGPU.log (WORKFLOWMODE="print")
- Simulated different IR's and collision systems now (PbPb: 50kHz, 30kHz, 15kHz; pp: 1500kHz, 1000kHz, 500kHz)
- Created dedicated dataset with loopers: 1 Ev. Pb-Pb 500kHz + lowneut=true = many loopers at high time-bins
- Created dedicated simulation for overlap training data: 5 Ev. Pb-Pb 200 kHz should give a high local occupancy and a lot of overlapping tracks (to be seen if it is locally realisitic)
Performed investigation on spacecharge distorted data.
- Tested NN's trained on not-spacecharge-distorted data to see if they are good enough or need retraining.
- Tested different input sizes and (NN classifciation + NN regression) vs. (NN classification + GPU CF regression) vs. (pure GPU CF regression)
- Overall results:
- NN classification + NN regression:
- Regression does not work (well), bands are significantly broader or look like noise. Needs retraining. Was basically expected.
- When applying all corrections, charge offset of native clusterizer does not appear anymore (investigating)
- NN classification + GPU CF:
- Similar effects as in non-distorted data: ~10-20% reduction of clusters. Bands look virtually identical for all variables (CoG pad and time, sigma, etc.) between both algorithms -> So classification seems to be somewhat robust to SC distortion
Plan ahead
- Retrain NN's with SC-distorted data and perform QA again
- Streamline everything more. Currently, many manual steps -> focus on automatization