Name: 2nd General VTX workshop
Start: 2026-04-20T13:00:00+02:00
End: 2026-04-22T13:00:00+02:00
Location: DESY

2nd General VTX workshop

from Monday, 20 April 2026 (13:00) to Wednesday, 22 April 2026 (13:00)

Monday, 20 April 2026

13:30 Registration
Registration
13:30 - 14:00
Room: Building 1B, Seminar room 4a/b
14:00 Introduction
14:00 - 15:30
Room: Building 1B, Seminar room 4a/b
Contributions

14:00 Welcome to DESY - Ami Rostomyan (DESY)

14:15 Status of VTX and workshop goals - Jerome Baudot (IPHC-Strasbourg)

14:40 WG2 sensor design report - Thanh Hung Pham (BELLE (BELLE II Experiment))

15:05 WG3 sensor testing report - Christian Bespin (Universität Bonn)
15:30 Coffee break
Coffee break
15:30 - 16:00
Room: Building 1B, Seminar room 4a/b
16:00 oVTX
16:00 - 18:00
Room: Building 1B, Seminar room 4a/b
Contributions

16:00 oVTX Design Status - Maurizio Massa (BELLE (BELLE II Experiment))

16:40 Status of the Design of the 4-chip Cu Dummy flex - Massimo Minuti (BELLE (BELLE II Experiment))

17:10 oVTX Module/Ladder assembly - Stefano Bettarini (BELLE (BELLE II Experiment))
19:00 Social dinner
Social dinner
19:00 - 21:30
Tuesday, 21 April 2026
08:30 WG4 - iVTX
08:30 - 10:30
Room: Building 1B, Seminar room 4a/b
Contributions

08:30 Plans towards iVTX ladder prototypes with TPG - Julien Bonis (BELLE (BELLE II Experiment))

08:45 Result of dicing samples at the iVTX dimension - Mathieu Goffe (DESY (Deutsches Elektronen Synchrotron))

08:50 iVTX developments at QMUL - Adrian Bevan (BELLE (BELLE II Experiment)) Ali Awais (BELLE (BELLE II Experiment)) Dhyey Ketan Joshi (QMU London) Dominic Howgill (BELLE (BELLE II Experiment))
10:30 Coffee break
Coffee break
10:30 - 11:00
Room: Building 1B, Seminar room 4a/b
11:00 WG4 - iVTX
11:00 - 12:00
Room: Building 1B, Seminar room 4a/b
Contributions

11:00 Thermal conductivity of irradiated TPG - Franz matejcek (U. Frankfurt)

11:25 RDL: electrical measurements on IZM structures and prototype - Andreas Ulm (BELLE (BELLE II Experiment))
12:00 Lunch
Lunch
12:00 - 13:00
Room: Building 1B, Seminar room 4a/b
13:00 I.R. Integration
13:00 - 14:35
Room: Building 1B, Seminar room 4a/b
Contributions

13:00 LS2 IR mechanics activity status and plan - Shuji Tanaka (BELLE (BELLE II Experiment))

13:40 oVTX services and rings' shape - Margherita Rovini (BELLE (BELLE II Experiment))

13:50 oVTX Ladder mount concept "a la SVD" (compliant with the sliding mechanism) - Maurizio Massa (BELLE (BELLE II Experiment))

14:00 Discussion also with STL
14:35 WG4 - Discussion with PXD + Potential visit
14:35 - 16:15
Room: Building 1B, Seminar room 4a/b
Contributions

14:35 Discussion - Carsten Niebuhr (DESY) Fabian Becherer (BELLE (BELLE II Experiment)) Karsten Gadow (BELLE (BELLE Gruppe)) Maiko Takahashi (BELLE (BELLE II Experiment))
16:15 Coffee break
Coffee break
16:15 - 16:45
Room: Building 1B, Seminar room 4a/b
16:45 WG1 - Performance
16:45 - 18:25
Room: Building 1B, Seminar room 4a/b
Contributions

16:45 Status and plan for VTX simulations & performance - Vidya Sagar Vobbilisetti (CPPM France)

17:05 Status of Upgrade performance studies - Alessandro Gaz (University of Padova & INFN)

17:25 Discussion on on-going or next tasks

17:55 Discussion with STL
Wednesday, 22 April 2026
08:00 WG5 - system / WG6 - telescope
08:00 - 09:50
Room: Building 1b,Seminar room 3
Contributions

08:00 WG5 general - Christian Irmler (MBI Vienna)

08:10 Results of lpGBT and VTRx+ irradiation campaign - Markus Friedl (MBI Vienna)

08:35 Update lpGBT testing for iVTX at CPPM - Patrick Breugnon (BELLE (BELLE II Experiment))

08:55 Report from Chinese Groups WG5 - Jingzhou Zhao (BELLE (BELLE II Experiment))

09:15 Requirements on the Interface between VTX back-end and Belle II Trigger - Taichiro Koga (BELLE (BELLE II Experiment))

09:30 WG6 - plan for OBELIX telescope - Carlos Marinas (IFIC (CSIC-UV))
09:50 Coffee break
Coffee break
09:50 - 10:20
Room: Building 5
10:20 TDR preparation
10:20 - 11:20
Room: Building 1b, Seminar room 3
Contributions

10:20 TDR discussion - Jerome Baudot (IPHC-Strasbourg)
11:20 OPEN Steering group meeting
11:20 - 12:00
Room: Building 1b, Seminar room 3
Contributions

11:20 Points to be discussed & discussion - Jerome Baudot (IPHC-Strasbourg)
12:00 Closing

12:00 - 12:30
Room: Building 1b, Seminar room 3