Outline GEM detectors R&D for EIC Tracking and P ID Detectors

RD51 Coll. Meeting 1

SRS readout for FLYSUB @ Fermilab Test Beam Facility (FTBF)

(R&D for all GEMs Tracking and PID detectors for EIC)

Outline

GEM detectors R&D for EIC Tracking and PID Detectors

SRS Electronics for FLYSUB (T-1037) @ FTBF

Safety issues raised by Fermilab

Kondo Gnanvo (on behalf of FLYSUB consortium)

10/15/2013


FLYSUB: Tracking and PID detector R&D for EIC with GEM

FLYSUB Consortium is:

• Brookhaven National Lab (BNL)

• Florida Tech (FIT)

• Stony Brook University (SBU)

• University of Virginia (UVa)

• Yale University

Shift Crew 2

Shift Crew 1

FLYSUB Team for the T-1037 Test beam @ FTBF Fermilab (October 2013)

10/15/2013

T-1037 is funded by theSite-neutral R&D

Program administered @ BNL


Electron-Ion Collider

• The Next QCD Frontier• Physics:

– Matter at high gluon density– Nucleon spin– Spatial Parton Distributions

eRHIC @ BNL

MEIC @ J-Lab

10/15/2013

RD51 Coll. Meeting 410/15/2013

Mini drift GEM detector : Brookhaven National Laboratory

Challenge: Standard GEM tracking chambers have

their resolution deteriorate with non-normal

incidence.

Approach: Raising the grid above the first GEM

allows each chamber to measure a vector to correct

for the inclination of every track.

Mini drift GEM setup (MT6 1A @ FTBF, Oct 2013)


GEM with 3-Coordinate Readout : Yale University

Challenge: Cartesian Readouts lead to

ambiguities in X-Y associations for high

multiplicity events.

Approach: 3 coordinate readout made on

double-sided Kapton.

Standard COMPASS style Readout - XY Hit Matching by Charge

New 3-coordinate readout-Hit matching: GEOMETRY & CHARGE

3D-Coordinate GEM setup (MT6 2A @ FTBF Oct. 2013)


Large Area GEM Tracking Detector: Univ. of Virginia & Florida Tech

Challenge: GEM detector size must be expanded with excellent spatial resolution

Approach:

Florida Tech: CMS-like GEMs with zigzag readout, low numbers of electronics channels

Univ. Of Virginia: Standard 2D Triple GEM with u/v readout and low material budget

UVa

SBS

1

UVa

EIC

FIT

CMS

zz

FIT

S4 zz

FIT

10x1

0 zz

UVa

SBS2

Tr

acke

r 4Trac

ker 1

Trac

ker 2

Trac

ker 3

2D stereo angle readout Uva EIC GEM prototype

Zigzag readout for CMS chamber Large size GEM setup with 10 chambers (MT6 2B @ FTBF, Oct. 2013)


2D GEM-based Short Radiator RICH: Stony Brook University

Challenge: Hadron (pion, kaon, proton) ID at high lab momentum requires the Cherenkov effect. Typical

long radiator lengths (e.g. 3 meters CF4 in LHCb) make experiments large/costly.

Approach: CsI photocathode RICH allows operation in DEEP UV (down to 120 nm) thereby collecting more

light. Further, this photon detection technology is VERY inexpensive per unit area.

GEM-RICH setup (MT6 2B @ FTBF. Oct. 2013)


SRS Electronics for FLYSUB T-1037 @ FTBF

• SRS electronics for the readout during the T-1037 at Fermilab

• 4 setups, 19 detectors, 13,824 channels

• For the DAQ software:

• 3 setups use RCDAQ (Martin Purshke, BNL)

• 1 setup use DATE/AMORE (LHC ALICE, CERN)

• SRS-SRU for the first time in Test Beam condition

• 4 FECs/ADC, 64 APVs, 8192 channels


SRS Readout using RCDAQ (M. Purshke, BNL) @ FTBF

9

• 3 of the 5 systems currently in the FTBF beam use the BNL RCDAQ system Minidrift

GEM Detector

(BNL)

3-Coordinate Readout

Plane(Yale)

Short Radiator

RICH(SBU)

Beam Spot

Y-pos corr. with Silicon Telescope

Full load of 16 Hybrids

Read out together with DRS4

DRS4

32 GeV Beam Momentum


RCDAQ in a few lines...

• Lightweight and versatile DAQ system which can read out the SRS system (among many other things)

• RCDAQ is available to RD51 members• FermiLab MWPC system implemented

in RCDAQ in September• Convenient operations, monitoring,

and analysis• Ext. parameter logging and

automated bookkeeping a particular strength

• Workhorse DAQ for BNL, SBU, and Yale's detectors

• See the SBU RD51 meeting for an in-depth discussion:

https://indico.cern.ch/contributionDisplay.py?contribId=54&sessionId=7&confId=179611




Taking it all the way: The Mini drift GEM Readout• Reading the SRS is easy, done deal.• We were rotating the detector in the beam with a remote-controlled

step motor• Ideally, the raw data files would contain the read-back motor position;

we also took a webcam picture of a scale at the rotating axis

rcdaq_client create_device device_command 9 0 "srs_control readapv > $HOME/apv.txt"rcdaq_client create_device device_file 9 910 $HOME/apv.txt

rcdaq_client create_device device_command 9 0 "/home/eic/rcdaq_setup/prepare_run.sh"rcdaq_client create_device device_file 9 940 $HOME/current_position.txtrcdaq_client create_device device_file 9 941 $HOME/snapshot.jpgrcdaq_client create_device device_file 9 942 $HOME/overhead_snapshot.jpg

This is the setup for the begin-run event (type 9):

Read back and capture the SRS setup parameters

Script reaches out to the motor control system, gets readback, gets two cam pictures. Executed each time a DAQ run startsText file w/ position and two jpegs included in the begin-run event


SRS + SRU Readout using DATE @ FTBF

• FIT and UVa share a common DAQ for the large size GEM setup

• DATE and AMORE for the DAQ + Monitoring + 3 DAQ PCs

• First use of the SRS + SRU in a test beam condition

SRS/SRU = 4 FEC/ADCs and 64 APV25

Big thanks to Eraldo Oliveri (RD51/GDD Lab at

CERN) & Dipangkar Dutta , (MSU, USA)

for lending us each, one FEC/ADC for the test beam


SRS + SRU Readout using DATE @ FTBF• 64 APV’s read out by SRS• Acquiring data from FECs with an SRU• Current DAQ rate is ~150 Hz• Using 6-9 25ns time slices for digitization • Beam structure: 4s spills, 1min rep. time• Trigger: coincidence of 3 scintillators upstream and downstream of our setup

ADC’s

FEC’s

U. Va. SRU


SRS Readout using DATE @ FTBFU

VA

SBS

1FI

T CM

S ZZ

2 FI

T 10

x10

ZZFI

T N

S4 Z

ZU

VA

EIC

3 U

VA &

FIT

Tr

acke

rs +

SBS

2Single event hit recorded in all 10 GEM chambers


Dry Run test of the SRS + SRU @ CERN August 2013DATE Run Control Display

• SRS-SRU tested in RD51-GDD X-ray box

• 8 FECs card connected to the SRU

• 70 APV25 Hybrids, trigger from the 3rd GEM foil

• Preliminary evaluation of rate capability @ 600 Hz


Safety Issues raised by ORC Team @ Fermilab

A custom-built (by CERN) data switch chassis is connected to the CERN SRS crate power cable. There can be a maximum of 15 Amps on the 3V supply wire. However, the module (load side) has no observable fuse protection. Also, no documentation on this chassis was available at the time of the review. This issue, along with the crate's issues, will be taken up with CERN. Another concern with the CERN equipment is their use of DC power over the HDMI connectors. The power source is current-limited but the current protection is provided by devices NOT designed for overcurrent protection. In their SRS statement, the use of small resistors and a "small" wire soldered in between pads is described as sufficient current protection. This is NOT a sound practice and current protection should be provided by proper current protection devises, fuses, resettable fuses, CBs, etc. Again, an issue to be taken up with CERN. Given that the marginal operational and fuse protection issues discovered with the CERN crate and the data switch chassis, a camera should be set up to monitor these pieces of equipment during operation. Therefore, close inspection when preparing this installation for operation and remote monitoring of the installation needs to be exercised when operating this equipment.

On the SRU and the Euro-crate @ MT6 2B (Large size GEM stand)

The SRS crate and module readout system, made by CERN, is used here. The crate chassis is of a different configuration (larger with a dual power supply) than the one previewed yesterday. However, the construction is similar and presents the similar concerns as the smaller crate. These concerns will be addressed to CERN and are now, for this installation, permitted to be used just for the term of this installation.

On the Euro-crate @ MT6 2A (3-D coordinate stand)

1) The CERN VME crate's safety ground connection is now OK. However, upon inspection of a similar crate, it was found that there are some poor wiring techniques used in the construction of the crate. These techniques are not severe enough to warrant pulling the installed crate out of the installation but remedial action (to be described in an upcoming memo) should be taken at the earliest convenience. The crate is OK to use for this installation at this time.

Comments on the SRS mini crate in MT6 1A (Mini drift GEM stand )

The VME CERN crate used, upon examination had a loose AC-DC supply inside the crate and its AC cord intermingled with the DC output wires. Since this crate is out and open, require that the small power supply be restrained and the AC cord loops be separated from the DC cables.

Comment on the mini crate @ MT6 2A (GEM-RICH stand)


Summary

FLYSUB T-1037 is running and collecting good data in MTEST @ Fermilab

19 different GEM detector all read out with SRS electronics, > 14k channels of gas detector

Exciting new results, lots of data for offline analysis.

Big thanks to the FTBF Crew @ Fermilab

Big thanks to the RD51- SRS Crew @ CERN for the pre-test of the SRS-SRU (Aug. 2013)

Hans, Muller, Alfonso Tarazona, Filippo Costa, Eraldo Oliveri, Michele Bianco ….

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Outline GEM detectors R&D for EIC Tracking and P ID Detectors

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