HGTD-IJS meeting

Friday 16 Oct 2026, 08:15 → 09:00 Europe/Ljubljana

C/0-C084 - F9 seminarska soba (Jamova)

These are HGTD-IJS group meeting pages

 

https://cern.zoom.us/j/96207798641?pwd=STczWTN5YjFYTmlITFB3bEdPTE1MUT09 

 

 

F9 internal database:
(preprod) https://docs.google.com/spreadsheets/d/1um1xUsOMzj5rGVuCReQqf53B1h4MXAHaCTQQISyXkPY/edit#gid=762628997
(prod) https://docs.google.com/spreadsheets/d/1qijuMoBZnw5EZt8lmTz2q48BkcZ_ctu25dv5TNTIzX0/edit?usp=sharing

HGTD sample inventory:
https://docs.google.com/spreadsheets/d/13VakRG1eQYrnmJMr7BnfdmC9SSElFxrlI6vjo5_Zdck/edit?usp=sharing

Grafana (broken):
https://grafana-hgtd-sensors-qc.app.cern.ch/dashboards

HGTD production database:
https://nginx-hgtddb.app.cern.ch/

 

CERN Group's Dashboard Tool (via EduVPN):
http://hgtd-pqc-pc-01:8501/

 

HGTD production progress:
- IHEP Delivery 1.1 (50 wafers): 60 kW, IT done, all passed 

- IHEP Delivery 1.2 (50 wafers): 66 kW, IT done, all passed

- IHEP Delivery 2 (95 wafers): 63 kW, IT done, B36-W7 & B36-W11 fail TCT gain --> check Sr90

- IHEP Delivery 3 (112 wafers): 63 kW, cooling down

- IHEP Delivery 4 (13 Wafers): irradiation next week
- IHEP Delivery 5 (60? wafers): exp. to leave IME in Oct

 

IHEP in kind (3 del 50+W each: Oct 26, Jan 26, Apr 26)
USTC in kind (85 W, Dec 26)
Spain in kind (50 W each, Feb 27, May 27)

 

Annealing:
- 160 kmin at 40°C done for CV samples

- 80 kmin at 40°C done for TCT samples

- Ajda QT (Batch 33, D2):
    - 40, 60, 80 °C (3 samples 25e14)
    - 40 °C: 4e14, 8e14, 15e14, 25e14 (5 samples)
    - 1 min done
    

PQC:

SQC: 
- Edge potential study by Bor done (4e14 main sensor)
    - Potential on the dicing edge very similar to backplane potential
    - Next study with 25e14

IT:
- Delivery 4 to be irrad/tested

Database:
 - Reprocessing: 
    - correct irradiation entry
    - Ileak move from Vfd to 100 V

Timing:
- Voltage steps 400, 450, 500, 550 V, (600 V)
- Test SC board stability with a pulsar
    - Pulse height 8.6 % difference between -30 °C and +20 °C
    - REF temperature is about -5 °C during measurement at -30°C

Flex Tails:
- asked Elgoline for quotes

Irradiations:
- Birmingham 22 MeV: done cp = 2.9e-16
- Krakow 60 MeV: done cp = 2.3e-16
- Cyric 70 MeV: ready to start
- UNM/FNAL 400 MeV:  awaiting return
- IRRAD 24 GeV: cp = 2.9e-16

Hybrid tests:
- ordering 20 hybrid boards
- Irradiations of B1.2 to 4e14, 8e14, 15e14, 25e14, 30e14 (2/fluence) - samples annealing done
- Tuning & Sparking:
    - Jitter measured with laser, sigma 19 ps
    - Jitter measured with pulsing on WB hybrids, sigma 17 ps at minimal thr
    - Shot noise study - ready to start publication
- Sr90
    - see HGTD week report
- Module received, tuning successful
    - Changing LV Power supply
    - Sr90 performance after init tests

Testbeam:
- AIDAInnova TI-LGAD mar26 analysis ongoing
https://docs.google.com/spreadsheets/d/1gXOXmDh_rMZvVni9Ns_o9tcRdI506K8smWYKMCjrMm8/edit?gid=0#gid=0
- IME3D mar26 analysis ongoing

IME3D:
- 1um electrode 35x35 measurement done
- gain 80-86V
- study long (30 ns) waveform tails (plasma?)

Publications:
- HPK HAB version 4 - need to implement comments
- Mixed: waiting for author list
- 3D - accepted
- HGTD hybrid jitter

3D CNM:
- 1-x (square single), 2-x (hex single), 4-x (hex 5x5), 5-x (square 5x5)

Thin LGAD (Ex-Flu)
- Received 15, 20 um thick LGADs
- Todo timing unirradiated,

 

CNM overdoped LGAD:
- Back to step 1

 

CiS LGAD:
- Production ongoing

 

Summer student projects:
- DC AC TCT for defect studies (start Top-TCT IR with W317, next irradiated, next E-TCT). Try also red light
- weighting field simulation in HGTD pixel corner
- 3d in photovoltaic mode
- MP exploring open source TCAD software

 

 

1 HGTD production

Speakers: Ajda Osterman, Bojan Hiti, Brigita Novak, Gregor Kramberger (Jozef Stefan Institute), Iskra Velkovska, Jernej Debevc (Jozef Stefan Institute (SI)), Matic Terglav (IJS)

2 Hybrids and Modules

Speakers: Bojan Hiti, Gregor Kramberger (Jozef Stefan Institute), Marko Puklavec (F9)

3 Testbeam

Speakers: Ajda Osterman, Bojan Hiti, Gregor Kramberger (Jozef Stefan Institute), Iskra Velkovska (Jozef Stefan Institute (SI)), Jernej Debevc (Jozef Stefan Institute (SI))

4 R&D

Speakers: Ajda Osterman, Bojan Hiti, Brigita Novak, Gregor Kramberger (Jozef Stefan Institute), Iskra Velkovska (Jozef Stefan Institute (SI)), Jernej Debevc (Jozef Stefan Institute (SI)), Marko Puklavec (F9)

5 AoB

Speaker: Ajda Osterman

oktober 16 2026.pptx