Production Plan for SiW-ECAL Slabs in Japan by Kyushu Team
The Kyushu team, in collaboration with other institutions, is actively involved in the production of SiW-ECAL slabs in Japan. The plan includes ongoing activities, optimization targets, and status updates on short slabs. The production strategy leverages Japanese industry expertise to enhance efficiency and quality, aiming for optimal performance and cost-effectiveness. Various technical aspects, such as sensor preparation, FEV/SMB production, and interconnection processes, are detailed in the plan.
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Plan of production of SiW-ECAL slabs in Japan Taikan Suehara (Kyushu University) Kyushu team: K. Kawagoe, T. Yoshioka, I. Sekiya, H. Yamashiro, Y. Miura, R. Mori Collaboration with SiW-ECAL team: LLR, LAL, LPNHE, Kyushu, KEK, Tokyo Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 1
Kyushu activities Ongoing SKIROC2/A studies with testboard: I. Sekiya Participation and analysis of test beam: Y. Miura, I. Sekiya APD/PSD/LGAD study: R. Mori, H. Yamashiro Planned Firmware on DIF etc. Y. Miura FEV production & test T. Suehara, Y. Miura, I. Sekiya Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 2
Short Slabs - Status Successfully tested 7 slabs at DESY testbeam in June Several issues Retriggering Interconnection Dead slabs etc. Still many things to do Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 3
Production in Japan - Targets Optimization of production/test method Benefits from Japanese industry PCB, FPC, dispenser, We have close connections to design companies (instead of work by in-house engineers in Europe) Quick studies in Japan by having more slabs Firmware development Development of test stands (ASIC, slab with RI, cosmic, ) Get more slabs by production at multi-sites Investigate optimal price Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 4
Breakup of a short slab Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 5
Breakup of a short slab (cont.) Sensors by HPK FEV with SKIROC2(A) Gluing sensor to FEV SMB board (adapter to DIF) and interconnection FPC (Kapton) for bias (and gluing them) Copper sheet and cover Stiffener DIF Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 6
Preparation Sensor (just buy) Will obtain ~20 sensors in Jan/Feb 2018 FEV/SMB (production in Japan) Interconnection Gluing / alignment (dispenser + robot) FPC (for bias) Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 7
FEV/SMB production FEV: flatness They confirmed < 0.4 mm (measured after virtual reflow) Interconnection FEV-FEV and FEV-SMB Plan to replace them with FPC connector/cable SMB: small bugfix shared with LLR (under discussion) Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 8
FEV/SMB production (cont.) SMB currently mixed rigid-flexible PCB Cost is high (-800 EUR/board @ 5 boards) Can be replaced by connectors/FPC (as same as interconnection) Mechanical strength? Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 9
Gluing We will buy a dispenser in Kyushu with other projects ATLAS pixel upgrade Muon g-2/EDM in J-PARC Investigating several providers Musashi engineering Iwashita engineering Cost: 12-20k EUR (dispenser + robot) Target Experience of assembling slabs (glue + alignment) Optimization of glue etc. Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 10
(Optimistic) Schedule First FEV with single SKIROC2: Nov.-Dec. Dispenser arrival: -Dec. First test & assembly: Dec.-Feb. Production with 16 SKIROC2(A): Feb.-Mar. Testbeam with 5 slabs from Japan: ~summer Taikan Suehara, CALICE meeting @ Tokyo, 26 Sep. 2017 page 11
