1. Large-Area GEM Detector Development at CMS, RD51, and Fl. Tech – A brief overview – Marcus Hohlmann Florida Institute of Technology, Melbourne, FL PHENIX tracking upgrade workshop - BNL, Dec 15, 2010

2. Overview Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 2 Detector prototype development at CMS Production techniques for large-area GEM detectors at Fl. Tech RD51 Scalable Readout System for MPGDs

3. Potential CMS high-  upgrade Potential muon upgrade at |  |>1.6 with GEMs for triggering & tracking Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 3 A. Sharma, S. Colafranceschi ~1m Triple-GEM Prototype

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

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

6. Beam Test of Large-Area GEM Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 6 18-28 October 2010: Successful  /  Beam Test at RD51/H4 (CERN SPS) Tracking telescope A. Sharma, S. Colafranceschi Detector performed well. Data analysis ongoing.

7. Fl. Tech GEM stretching technique Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 7 Cost-effective GEM foil thermal stretching technique via infrared heating under clean room conditions in our high-bay lab (RD51 Technical Note in preparation) along long side of frame CMS high-  prototype drift foil (1m long) Works well ! Plexiglas frame Infrared lamps

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

9. Readout Electronics & DAQ Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 9 Florida Tech SRS application: Commercial production of ~160 APV25 hybrids DAQ software development Event monitoring First demonstration of chain APV+SRS+DATE+AMORE First integration of SRS with 30cm×30cm GEM detectors Largest user of SRS to-date (~15k ch.) RD51 coll. is developing a common Scalable Readout System for MPGD’s 9 APV25 or VFAT or BNL ATLAS Hybrid here. Hans Müller Sorin Martoiu (CERN) from few 100 to ~10 5 channels full hardware chain tested by now common DAQ part X-Strip Cluster Y-Strip Cluster Full readout of 30  30cm 2 detector w/ 1500 strips

10. Available Facilities at Fl. Tech Dec 15, 2010 M. Hohlmann – PHENIX tracking upgrade workshop 10 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 LeCroy scope) –Construction materials (e.g. glues, coatings) Readout & DAQ –Spare SRS r/o components in production for R&D work –Dual SRS use (20,000 ch.) for existing 30cm×30cm GEMs and for future R&D (PHENIX?) anticipated –DAQ & monitoring software for SRS currently under development High-Bay experimental area Thank you for your time!