LargeArea GEM Detector Development at CMS RD 51

Large-Area GEM Detector Development at CMS, RD 51, and Fl. Tech – A brief overview – Marcus Hohlmann Florida Institute of Technology, Melbourne, FL PHENIX tracking upgrade workshop - BNL, Dec 15, 2010

Overview • Detector prototype development at CMS • Production techniques for large-area GEM detectors at Fl. Tech • RD 51 Scalable Readout System for MPGDs Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 2

Potential CMS high- upgrade A. Sharma, S. Colafranceschi Potential muon upgrade at | |>1. 6 with GEMs for triggering & tracking Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop Triple-GEM Prototype ~1 m 3

Large Triple-GEM prototype Largest GEM detector built to-date (CERN): Shielding Openings for VFAT electronics Readout (PCB w/ strips) Frame GEM Foil Drift plane Al frame with gas distrib. grooves Dec 15, 2010 HV divider Spacers 3 mm Al base plate M. Hohlmann – PHENIX tracking upgrade workshop A. Sharma, S. Colafranceschi 4

Single-mask GEM foils TOP TOP BOTTOM Single-mask technology is required for large-area GEM foil production. Recent quality of these foils equals standard doublemask GEMs. Single-mask GEM cross section Examples of GEM hole quality 13 sectors 9 sectors 7 sectors 6 sectors 35 HV sectors per GEM foil with area of ~100 cm 2 each. Single mask GEM foil with spacer frame at CERN (active area: 990 mm long & 220 -455 mm wide) A. Sharma, S. Colafranceschi Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 5

Beam Test of Large-Area GEM 18 -28 October 2010: Successful / Beam Test at RD 51/H 4 (CERN SPS) Tracking telescope Detector performed well. Data analysis ongoing. A. Sharma, S. Colafranceschi Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 6

Fl. Tech GEM stretching technique Cost-effective GEM foil thermal stretching technique via infrared heating under clean room conditions in our high-bay lab (RD 51 Technical Note in preparation) m long) (1 il fo ft ri d e p - prototy CMS high- Infrared lamps frame s a l g i x Ple Works well ! along side of frame Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 7

Detectors with IR-stretched GEM foils Eight detectors built at CERN using oven (30 cm active area) Transfer of know-how from CERN Two 30 cm × 30 cm detectors built at Fl. Tech using IR stretching method: Both detectors working mips Dec 15, Sep 30, 2010 8 ke. V X-rays M. Hohlmann – PHENIX tracking upgrade workshop 8

Readout Electronics & DAQ RD 51 coll. is developing a common Scalable Readout System for MPGD’s • from few 100 to ~105 channels • full hardware chain tested by now APV 25 or VFAT or BNL ATLAS Hybrid here. Hans Müller Sorin Martoiu (CERN) Q part DA common Florida Tech SRS application: • Commercial production of ~160 APV 25 hybrids • DAQ software development • Event monitoring • First demonstration of chain APV+SRS+DATE+AMORE • First integration of SRS with 30 cm× 30 cm GEM detectors • Largest user of SRS to-date (~15 k ch. ) Dec 15, 2010 Full readout of 30 30 cm 2 detector w/ 1500 strips X-Strip Cluster Y-Strip Cluster M. Hohlmann – PHENIX tracking upgrade workshop 9

Available Facilities at Fl. Tech • Production & Testing – – – Medium-size clean room for prod. (~ cl. 1, 000) Small clean room for R&D (~ class 10, 000) Laminar flow hood for R&D (~ class 100) Space in 350 m 2 high-bay area for test stands Gas detector lab (HV, gas supply & monitoring, 10 Gs Le. Croy scope) – Construction materials (e. g. glues, coatings) High-Bay experimental area • Readout & DAQ – Spare SRS r/o components in production for R&D work – Dual SRS use (20, 000 ch. ) for existing 30 cm× 30 cm GEMs and for future R&D (PHENIX? ) anticipated – DAQ & monitoring software for SRS currently under development Thank you for your time! Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 10