INDIAN PARTICIPATION @ FAIR

Subhasis Chattopadhyay

SIS 100 Tm

SIS 300 Tm

Structure of Nuclei far from Stability

cooled antiproton beam:Hadron Spectroscopy

Compressed Baryonic Matter

The future Facility for Antiproton an Ion Research (FAIR)

Ion and Laser Induced Plasmas:

High Energy Density in Matter

low-energy antiproton beam:antihydrogen

Primary beams:1012 /s 238U28+ 1-2 AGeV4·1013/s Protons 90 GeV1010/s U 35 AGeV (Ni 45 AGeV)

Secondary beams:rare isotopes 1-2 AGeVantiprotons up to 30 GeV

The Story:

Brainstorming meeting onNuclear Physics in next 20 years (DST-DAE meet @Mumbai

(7-8 April 2006)

Committee for FAIR:

S. Chattopadhyay, VECC (Coordinator)S. Bhattacharya, SINP

D. Biswas, BARCL.M. Pant, BARC

S. Mandal, DUR. Palit, TIFR

Guidelines:• Contribution should make impact on overall physics• Contribution should be on specific hardware• HW should be built in the country • Early contact should be made to the main experiment • Collaboration is the key with large university participation

• Should have significant spin-off

1. Detailed e-mail discussion2. Meeting at BARC/VECC3. Co-ordinators for respective experiments4. Report send on October’end-2006

At least 40 M Euro contribution

Official status

• DST-DAE co-ordination committee meet (july 07)

• V.S. Ramamurthy: Chairman, FAIR-India task force

• DST meeting took place on Dec 30th 2007 ( Finance Secy cleared the project)

• VSR attended FAIR meet at GSI

• DST-DAE co-ordination committee meet could not be taken twice, next scheduled on 8th March’08

Building the SuperConducting Magnets for SUPER-FRS

And Building of proton LINAC components

(Major contributions, in-kind)

BEAM CATCHERS

To stop primary beam & other fragments

BC1BC1BC2BC2

BC3BC3

Implementation Strategy of FAIR Project (Time ~ 4 Implementation Strategy of FAIR Project (Time ~ 4 yrs)yrs)

Design at VECC

Design verification at VECC and GSI

Prototype built by VECC in INDIA

Test run at GSI

Formulation of final beam dump design

Fabrication in INDIA

Installation in Super FRS Beam Line at GSI

4 dipole4 quadrupoles1 sextupole

Milestones:• Mid of 2007: Magnetic design of dipole magnet• Mid of 2008: Engineering design of dipole magnet• End of 2009: Fabrication of full size dipole magnet• Mid of 2011: Fabrication of additional 3 dipole magnets• End of 2007: Magnetic design of quadrupole magnet• End of 2008: Engineering design of quadrupole magnet• Mid of 2010: Fabrication of full size quadrupole magnet• End of 2011: Fabrication of additional 3 quadrupole magnets, one sextupole magnet

Other experiments:

NUSTAR

PANDA

CBM

Our Achievements So far (1988-2007)…

(1) PMDs for WA93,WA98, STAR,ALICE, Muon chambers for ALICE

(2) Development of advanced gaseous detector laboratory * Gaseous detector laboratory exist at VECC-SINP and other

collaborating institutes (3) Development of advanced electronics laboratories (MANAS development, a highlight)

(4) Development of large scale computing facilities (Grid computing) (5) Successful International and National Collabotation (VECC,SINP,PU,RU,JU,IOP,AMU,IIT-Bombay)

(6) More than 40 PhD students

Future based on this strong base of experience and expertiseFuture based on this strong base of experience and expertise

Collaborators:VECC SINP IOP BARCPanjab U Rajasthan U AMU Calcutta Univ BHUJammu Univ Guahati UnivKashmir UnivIIT-KGP Bose-Inst, Kolkata…

•Three (Indian) collaboration meetings so far•Last on 30-31st July’07 at VECC

• Discussed details of physics/HW/simulation

•Simulation is running at VECC and at other places•One GEM-based chamber built and tested with source•One Engineer visited GSI for electronics work

INDIA-CBM COLLABORATION

Simulate, design, build and operate a large part of CBM muon system

MuCh detector 2007

Fe Fe Fe Fe Fe

20 20 2

0 30

35 cm

102.5 cm0 cm5 cm

260cm

1. Beam : 20152. Distance – 2.6 m3. Chambers: high resolution gas

detectors (entire Indian effort)

Challenges: High Rate High density Large background

Development of fast, highly granular muon detector for Development of fast, highly granular muon detector for Compressed Baryonic Matter experiment @FAIRCompressed Baryonic Matter experiment @FAIR

Task Name Institutes involved

Status

Simulation VECC, Calcutta University, Guahati Univ, BHU, BARC, Jammu Univ, Kashmir Univ

Codes installed everywhere, some results produced

Detector R&D VECC, SINP, BHU, Guahati Univ, CU

Started at VECC, Universities need fund for lab setup

Electronics VECC, BARC, CU, SINP, PU

Started at VECC, CU discussion with GSI going on

Physics SINP, VECC, CU, Bose Institute, IOP-Bhubaneswar, PU

Theoreticians are involved in big way

Working Groups and Status (July 2007)

Comparison of detectors..

MWPC GEM Micromegas

Rate capability 10^6Hz/mm^2 >5x10^7Hz/mm^2 10^8Hz/mm^2

Gain High 10^6 low 10^3 (single)

> 10^5 (multi GEM)

High > 10^5

Gain stability Drops at 10^4Hz/mm^2

Stable over 5*10^5Hz/mm^2

Stable over 10^6Hz/mm^2

2D Readout ? Not really Yes and flexible Yes, not flexible

Position resolution > 200 µm (analog) 50 µm (analog) Good < 80 µm

Time resolution ~ 100 µs < 100 ns < 100 ns

Magnetic Field effect High Low Low

Cost Expensive, fragile Cheap, robust Cheap, robust

Both GEM & MICROMEGAS are suitable for high rate applications

GEM (fast high resolution detector) stack under test

Resistive chain biasing

6 mm holes in the plexiglasstop cover for Source.

Gas Inlet

source

GEM assembly housed in ~60 cm x ~30 cm box

Gas: Ar/CO2-70/30Source: Ru106(ß)

mesh – a 5-10 micronthick nichrome wire

Micron (30micron) level hole

Electronics (Plan to participate in design and development of fast electronics)

One engineer visited GSI, • started working on a FPGA-based readout board • Discussion started on participation in design of n-XYTER chip (32MHz, 128 channels)

•Calcutta University wants to participate in a big way

A. Roy and M. Dey will give details

512 Channels FEE Board A Portion of Full Schematic Diagram

•Development of ASIC for CBM readout chip.

n-XYTER chip:•(mixed mode)•128 channels•32 MHz rate (analog)• Useful for all purpose applications

•GSI has assigned part of the design job to us•Discussion started at CU and BARC design team

Thick GEM, (first attempt)

0.5mm thick double-sided copper clad FR4 material. hole size is 0.3mm and the pitch is 1.2mm.

Made locally.

Near term PLAN :

0.5mm x 0.5 mm readout plane, to be readout by GASSIPLEX

GASSIPLEX Board +DAQ ready

Readout plane ready

Next: with n-XYTER??

Next Steps....

➢ to do a gain estimation with the double GEM ....maybe implement a third GEM layer

➢ Operate with a segmented readout – PCB ready

➢ Do timing Study, and for that one may try to optimise or use the already optimized gas mixture for high rates

➢ Use THGEM, as it more robust

➢ Testing a MICROMEGAS foil.

➢ Build facility at BHU

Simulation

Codes installed (Partha’s talk tomorrow)

Immediate plan:

•Muon trigger study•Magnetised Iron as absorber•Optimisation of detector/absorber combination

Radiation study with FLUKARadiation study with FLUKA

Plan (as put in DST-DAE proposal):

Detector development and control: VECC, SINP, BHU, PU, JU

Electronics:VECC, CU, BARC

Simulation: VECC, GU, JU, BHU, PU, AMU

Silicon layer : BARC