2nd General VTX workshop

Session

oVTX

20 Apr 2026, 16:00

Building 1B, Seminar room 4a/b (DESY)

4. oVTX Design Status

Maurizio Massa (BELLE (BELLE II Experiment))

20/04/2026, 16:00

(30' talk + 10' discussion)
Items:
- oVTX layout: L4,5,6 ladder design, fixing to the cones with sliding mechanism;
- Mechanical characterisation of the new L6 prototypes. How to cope with starting deformation: thermal cycles by INFN-Pi and cold-glueing by the company;
- thermal-fluid-dynamic bench with not-uniform heathers for 1-pipe cold plate and thermal simulations;
- oVTX cooling...

5. Status of the Design of the 4-chip Cu Dummy flex

Massimo Minuti (BELLE (BELLE II Experiment))

20/04/2026, 16:40

(20' talk + 10' discussion)
Items covered:
-Design/order status, estimated delivery time
-Implementation of temperature sensors' reading
-Plan for the test in Vienna: chip emulation by FPGA

6. oVTX Module/Ladder assembly

Stefano Bettarini (BELLE (BELLE II Experiment))

20/04/2026, 17:10

(20' Talk + 20' discussion)
Items covered:
- Specifications & QA;
- modules (i.e. electrical unit) assembly;
- ladders (mechanical unit) assembly;
- Tools (chuck/jigs), prototype's parts procurements and assembly procedures development;
- Construction sites / schedule.