Powered by Indico
v3.2.8
These are HGTD-IJS group meeting pages
https://cern.zoom.us/j/96207798641?pwd=STczWTN5YjFYTmlITFB3bEdPTE1MUT09
F9 internal database:
https://docs.google.com/spreadsheets/d/1um1xUsOMzj5rGVuCReQqf53B1h4MXAHaCTQQISyXkPY/edit#gid=762628997
HGTD sample inventory:
https://docs.google.com/spreadsheets/d/13VakRG1eQYrnmJMr7BnfdmC9SSElFxrlI6vjo5_Zdck/edit?usp=sharing
Grafana:
https://grafana-hgtd-sensors-qc.app.cern.ch/dashboards
PQC:
- LGAD C-V with irradiated QCTS (IHEP 1.5e15) done at different frequencies (100, 1000, 10000 Hz). Every curve looks different and none make any sense. Verify with a second sample.
- van der Pauw measurements (measurement at single bias, typical values: I=10 mA, R=20/0.6/0.01 Ohm):
Install Ke6517 (force V, measure I) and try to implement it in the DAQ and analysis
Database:
- Check how uploading one structure multiple times works
- For Sensor meeting:
- it is not clear to us how to read ATLAS-ID from the database (wafer ID and QCTS ID)
- we looked at the QCTS sample USTC W4-42. Vgl and Vfd are not given in the database. Revise if parameter extraction is correct. Oxide thickness also does not make sense (91 um)
- With new batch of samples we agree to upload results of each measurement into the database at the end of the measurements. Explain this also to students.
- We do not yet know ATLAS IDs for 5 USTC wafers we are currently irradiating
IT:
- Received 5 final preproduction wafers from USTC (5x QCTS/wafer, 2 main sensors). Irradiation on 13 May (QCTS 1x 15e14, 2x 25e14, Main 1x 15e14, 1x 25e14)
- When do we expect the shipment of 19 IHEP wafers?
- CERN IRRAD: 11 samples (2x 4e14, 2x 8e14, 2x 12e14 neq/cm2). DB Status "in preparation". Prepare few full sensors when available
- 8 samples shipped to FNAL 400 MeV proton irradiation (0e14, 4e14, 8e14, 12e14 - 2 per fluence) - status?
- prepared USTC 15e14 samples for another neutron irradiation on 13 May
Plan up to mid-June:
- Preproduction samples expected after 6 May - 19 wafers IHEP + 5 wafers USTC (5 samples/wafer)
- Irradiation (2xEoL, 1x15e14 per wafer) - expect samples to return by 20 May
- 21 May is Iskra's thesis topic defense
- 5-12 June is AidaInnova testbeam at SPS
- 17 June is start of the DRD3 workshop. Need to complete as many measurements as possible by then.
- 18 work days between those dates - we need to measure 24 samples after EoL fluence (1 sample per wafer) with TCT and Sr90 and define acceptance criteria
Timing:
- Voltage steps 400, 450, 500, 550 V, (600 V)
- generate charge vs Ileak plots and add data into the database
Long term stability:
- TODO with USTC
Publications:
- Autorship policy for ATLAS preproduction is not yet clarified
- HPK HAB first version completed - BH submitted comments
- IT QC test paper: first version completed. Need an ATLAS note by PRR
Other:
- Try Edge-TCT on QCTS: polishing, optics to be explored. The goal is to measure E-field/gain, also helpful to NIKHEF/Nijmegen HGTD performance simulation (QT Petja)
- 3D RD50 samples: AidaInnova testbeam (DESY Feb2024, SPS Jun2024). Analysis meeting: AIDAInnova 15 March
Summer student projects:
- SiC TCT will be delivered from CNM within RD50
- CdZnTe TCT with 832 nm - quick test done on a single pixel, no signals observed front or back
- DC AC TCT for defect studies
- weighting field simulation in HGTD pixel corner
- 3d measurements with TCT+Sr90