GEM Detector R&D

at Florida Tech

– “Get to know each other” –

Marcus Hohlmann

Florida Institute of Technology, Melbourne, FL

EIC Tracking R&D Group Meeting, April 11, 2011

Florida Tech Overview

• CMS member since 2002

– Potential muon high- upgrade

with GEMs for tracking &

triggering (2009 - present)

– Muon Endcap Alignment

(2002 - present)

– CMS Tier-3 site on OSG

• PHENIX member since 2004

• RD51 charter member

– Large-area GEMs (WG1)

– Electronics (WG5)

• GEM R&D for DHS

• Notable Alumni

– Klaus Dehmelt (Ph.D. 2006)

– Georgia Karagiorgi (B.S. 2004,

Ph.D. MIT 2010, now Nevis Labs)

Kennedy Space Center

Florida

Tech

4/11/2011 2

Potential CMS high- upgrade

Potential muon upgrade

at ||>1.6 with GEMs

for triggering & tracking

~1m

Triple-GEM

Prototype

(2010)

Shielding

Readout (PCB w/ 256 strips)

Frame

GEM Foils

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):

4/11/2011 3

Fl. Tech GEM stretching technique

Cost-effective GEM foil thermal stretching technique via infrared heating under clean room conditions in our high-bay lab

(see RD51 Technical Note: RD51-2011-04 )

along long side of frame

Works

well

Infrared lamps

4/11/2011 4

GEMs for Homeland Security Application

Triple-GEM detectors for Muon Tomography (30cm 30cm active area, 2D readout, 400µm pitch)

mips 8 keV

X-rays

GEMs

GEMs

GEMs

GEMs

Targets

Kondo Gnanvo @ CERN 4/11/2011 5

RD51 SRS Readout Electronics & DAQ

Florida Tech SRS application:

• Commercial production of 160 APV hybrids at Hybrid S.A.

• DAQ software development (DATE system)

• Development of Event monitoring s/w (AMORE suite)

• First demonstration of chain APV+SRS+DATE+AMORE

• Integration of SRS with 30cm×30cm GEM detectors

• Largest use case of SRS to-date (~15k ch.)

RD51 coll. is developing a common Scalable Readout System for MPGD’s

APV25 or

VFAT or

BNL ATLAS

Hybrid here .

Hans Muller

Sorin Martoiu

(RD51, CERN)

• from few 100 to ~105 channels

• full hardware chain tested by now

X-Strip Cluster

Y-Strip Cluster

Full readout of 3030cm2 detector w/ 1500 strips

4/11/2011 6

Current SRS status

128 ch.

2048 ch.

12,200 ch.

Fl. Tech’s SRS currently being

commissioned at CERN

DATE DAQ

AMORE Monitoring

(Total cost ~20 kEUR)

- 120 APVs needed for

Muon Tomography

~ 40 APVs & 2 ADCs

& 2 FECs available

for R&D (~ 4k ch.)

40 MHz sampling 756 strips

4/11/2011 7

ADC FEC

APV Hybrid

FIT R&D Plan & Q for Simulation

-100

-80

-60

-40

-20

0

20

40

60

80

100

3000 3500 4000 4500 5000 5500 6000 6500 7000

Reconstructed Position [µm]

Po

sit

ion

Err

or

[µm

]

All figures, Bo Yu, BNL

Plan:

Follow up on previous BNL R&D

& study zigzag-strip readout to reduce

# of readout strips & consequently

cost of electronics for large tracker

Questions:

• What spatial resolution would be

needed for an EIC tracker?

• Can it be different for and ?

• What is the expected occupancy?

• What readout cell size would be needed?

4/11/2011 8