RD51 Membership Application

Kondo Gnanvo

on behalf of Radiation Detector and Imaging Group

RD51 Membership Application

Radiation Detector & Imaging Group

Thomas Jefferson National Accelerator Facility (TNJAF - Jefferson Lab - JLab)

RD51 Collaboration Meeting – November 17th, 2021

RD51 Collaboration Meeting, 11/17/2021 2


MPGDs in Hall A: Current experiments

SBS: Proton ArmSuper Bigbite Experimental program: 12 GeV era nucleon form factors

⇨ E12-07-109 (GEp5) : GpE/Gp

M up to Q2=12 GeV2 with liquid hydrogen target

⇨ E12-17-004 (GEn-RP) : GnE/Gn

M up to Q2=4.5 GeV2 polarized deuterium target

⇨ E12-09-019 (GMn): GnM/Gp

M up to Q2=13.5 GeV2 polarized deuterium target.

⇨ E12-09-016 (GEn): GnE/Gn

M up to Q2=10 GeV2 using a polarized 3He target.

⇨ E12-09-018 (SIDIS): Transverse target single spin assymetry in 3He(e,e’h)X

Super Bigbite Spectrometer (SBS) detector package

⇨ Two spectrometers: SBS for proton arm & Bigbite (BB) for electron arm

⇨ Detector re-configurable for each SBS experimental program

⇨ Total of 17 large GEM layers for tracking in both spectrometers ➔ 3 designs

Bigbite Spect. (BB): Electron arm

11 × UVa GEM layer

200 60 cm2

K. Gnanvo et al. Nucl. Instr. Meth. A782 (2015), pp. 77-86.

4 × U/V GEM layer

150 40 cm2

6 × INFN GEM layer

150 40 cm2


MPGDs in Hall A: Future experiments


MPGDs in Hall B: CLAS12 Micromegas Vertex Trackers (MVT)

M. Vandenbroucke, MPGD2015 Trieste, Italy, 10/13/2015

❖ Upgrade of the CLAS Experiment at Jefferson lab

❖ Study of the nucleon structure with 11 GeV electron

beam at high luminosity (1035 cm-2s-1)

Micromegas Vertex Tracker :

❖ Improve the track reconstruction in the

vicinity of the target

❖ Reduced volume between the magnet

and the Silicon Vertex Tracker (SVT)

❖ Large curved Micromegas

❖ 5T field

❖ Remote off-detector frontend electronics

❖ Small dead space

❖ High particle rate (30 MHz)

Cylindrical MM layers

MM disc layers


MPGDs in Hall B: BoNus12 radial TPC (rTPC) - cylindrical GEMs

M. Hattawi: CLAS Collaboration Meeting, Nov 10th - 13th , 2020

Physics motivation

❑ Neutron Structure function at Large xB

❑ Tagged-Proton nDVCS, Fully exclusive nDVCs etc …

Cylindrical GEM rTPC


MPGDs in Hall B: PRad Large GEMsPhysics motivations

Precision measurement of proton charge

radius using e-p elastic scattering process

PRad experiment Run (Summer 2016)

Hall B

▪ 2 large GEM trackers (120 cm × 55 cm)

▪ Largest GEM in experiment at the time

▪ Excellent position resolution (72 µm)

▪ Improve position resolution > 20 times

▪ Large improvements in Q2 determination

120 c

m

❖ PRad completed in 2016

❖ Proposal for an upgrade PRad-II

PRad

Prad-II

Large µRWELL technology


S. Stepanyan prototype under tests @UVa

MPGDs in Hall B: Upgrade of CLAS12 Forward Tracker

CLAS12


MPGDs in Hall D: R&D on GEM Transition Radiation Detector

e/π separation from one layer

https://wiki.bnl.gov/conferences/images/8/83/ERD22_GEMTRD-March2021_v1.pdf

Converting standard GEM tracker into GEM-TRD

▪ Large drift gap (20 - 30 mm) ➔ increase photon

detection efficiency

▪ ArCO2) replaced by Xenon based (XeCO2) ➔

increase photon detection efficiency

▪ Radiator at the entrance window of the detector ➔

created TRD photon

Physics motivation

L. Pentchev (JLab)

GEM-TRD/T prototype

HV1 HV2

GEM-TRD/T principle

https://wiki.bnl.gov/conferences/images/8/83/ERD22_GEMTRD-March2021_v1.pdf


MPGD R&D @ JLab for EIC

eRD108 program

eRD108 program

eRD108 program

eRD22 program


Radiation Detector & Imaging Group @ JLabheaded by Dr. Drew WeisenbergerPrimary mission:

❖ Explore new methods and technologies in supporting detector development for the experimental nuclear physics basic research program at

Jefferson Lab. The Group also seeks opportunities to apply its resources to more immediate societal needs.

Resources:

❖ Detector Group has a 1300 ft2 laboratory work area available to it exclusively on the Jefferson Lab campus.

❖ Equipment, materials and tools necessary for nuclear physics detector development and testing. These items include:

1. sealed radioactive calibration, sources, digital and analog oscilloscopes, high voltage supplies,

2. dark-boxes for detector and scintillator testing, several computer workstations interfaced to VME based and

3. stand-alone FPGA JLab developed flash analog to digital electronics.

4. The Group has a machine shop, three tabletop 3-D printers and a Voltera printed circuit board printer.

Technical capabilities:

❖ The Group has experience applicable not only to nuclear physics radiation detector development, but also to application spin-offs of the detector

technology with expertise in several areas relevant to radiation imaging detector development, including:

1. Component technologies of pixilated scintillators, position-sensitive photomultiplier tubes, micro channel plates, solid state detectors, silicon

photomultipliers, light guides and micro pattern gas detectors

2. Fast analog and digital detector readout electronics design and construction

3. Software development for real-time computer-controlled data acquisition and Monte Carlo and analytic simulations (GEANT4) and

tomographic image reconstruction for nuclear medicine imaging

Accomplishments:

Jefferson Lab has been awarded over fifty US patents based on inventions developed by Group members.

❖ Their technology has been licensed by several companies: Siemens Medical, Dilon Technologies, Ray Visions Inc and SmartBreast Corporation.

❖ The Group has developed radiation detecting systems for clinical and pre-clinical nuclear medicine (SPECT, PET and X-ray CT), plant biology

research and radiation monitoring in high and low radiation environments.

❖ The Group has collaborations with the University of Virginia, Duke University, Johns Hopkins University and the University of Regina. The Group

also collaborates with other DOE national labs on detector projects.


Radiation Detector & Imaging Group @ JLab

Members

Drew WeisenbergerGroup Leader

Brian KrossDetector Technical Associate

Eric ChristyDetector Physicist

Carl ZornDetector Physicist

Seung Joon LeeDetector Scientist

Kondo GnanvoDetector Physicist

John McKissonElectronics Engineer

John McKissonSoftware Technical Associate

Wenze XiDetector Scientist

Presently the Group has nine

members (six detector scientists

and three engineers).


Summary

❖ Jefferson Lab (or JLab) is home to a world class Continuous Electron Beam Accelerator Facility (CEBAF).

❖ CEBAF delivers polarized electron beams to four experimental hall (A,B,C, D) where the research in nucleon structure quark

confinement and physic beyond the Standard Model are carried out

❖ JLab has had an increasing interest in the MPGD technologies for its current and future experiments as well as part of its

contribution to the EIC detector.

❖ The Radiation Detector and Imaging Group at JLab has been involved in detector development and support for the JLab

experimental halls as well as non-nuclear physics application of the spin-off technologies that the group developed.

❖ The group is expanding its expertise in the MPGDs technologies for both nuclear physics applications and beyond

All these are a few reasons why we are interested in joining RD51 Collaboration to contribute to

the development and dissemination of MPGDs and benefit in return from the vast knowledge

experience and expertise of the collaboration



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RD51 Membership Application