Proposal to join RD51 collaboration of NISERSaikat BiswasNational Institute of Science Education and Research, Bhubaneswar, India

*RD51 collaboration meeting, Kolkata, 27-31 October, 2014

About NISER

●Present transit campus: @ Institute of Physics Campus, Bhubaneswar

●Permanent campus: @ Jatni in the Khurda District (298 acres)

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Activities on EHEP @ NISER ● Solenoidal Tracker At RHIC (STAR), in

Brookhaven National Laboratory, USA● A Large Ion Collider Experiment (ALICE)

at CERN◦ Positions held by NISER faculties in these

experiments⚫physics analysis coordinator and deputy

spokesperson and physics working group convenorship in STAR

⚫Editorial Board of ALICE● NISER is going to participate in upgrade

programs of these experiments. These upgrades include gas based detector developments involving frontier technology and innovative ideas

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About EHEP lab

●Present lab: @ IoP Campus, Bhubaneswar (area 300 sq-ft)

●New lab: Area 1500 sq-ft (900 sq-ft clean room, 600 sq-ft for seating)

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Gas mixing system and laminar flow system

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Man power●Faculty: 2 (one from IoP)●Scientific Officer (trained on gas

detector development): 1●Scientific Officer (Experts in

Electronics from IoP): 1●Lab operators: 2●Project student: 3●Ph.D. Student: 1 (Proposed)●Post Doc: 2 (Proposed)●Technician: 1 (Proposed)

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EHEP Lab status● New lab development in progress● IOP lab is being used for the time being● Ar+CO2 (70:30), Argon, Isobutane, Freon (R134a)

procured● Gas mixing system exists● Laminar flow table exists● Required electronic modules (like Electronic rack,

NIM Crate, HV module, Discriminator, Spectroscopic Amp, SCA, MCA, Pico-ammeter, Multi-meter etc.) procured

● One bakelite RPC detector is ready● Studies on plastic scintillator detector is going on● Experiments for Int. M.Sc. and Pre-doc student is

going on in the present lab

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Components used for Bakelite RPC

● 30cm × 30cm Bakelite sheets

● Thickness of each plate : 3mm

● Gas gap between two plates : 2mm

● 4 edge pressures : 30cm × 8mm

● 5 button pressures of diameter 1cm(roughly)

● 2 nozzles of 1mm hole of thickness 2mm *

Components of a RPC module: Pick-up strips, edge spacers and gas nozzles, two graphite coated bakelite sheet

Gluing of edge spacers, button spacers and gas nozzles on one bakelite sheet

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Complete RPC module

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Circuit diagram for efficiency measurement

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Block diagram for efficiency measurement Trigger (3F) : Sc01 x Sc03 x Sc024F : Trigger (3F) x Sc04Efficiency : 4F/3F

Experimental set-up for efficiency measurement

3 signals in coincidence

*Three scintillator signals in coincidence

Efficiency Vs. voltage

● The efficiency reaches a plateau region at nearly 100% from 1500 V onwards, when measured on the PMT side

● On the other side the efficiency reaches >90% at little higher voltage *

Efficiency of Sc-04 as a function of the applied voltage

Data Logger

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Hardware

Variation of t, p and RH with time

Assembled GEM

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Work done so far ……● Bakelite resistive plate chamber has been fabricated using

local materials● Surface resistivity of the graphite coating has been

measured and the uniformity is checked● Four plastic scintillator detectors have been tested

systematically● Their efficiencies have been measured using Co60 gamma

source● Gamma ray intensity varies with 1/r2

● Cosmic ray coincidence has been done● 2-fold and 3-fold coincidences have been found to be

around 1 per min per cm2

● The velocity of the cosmic ray muon has been found to be 2.53 x 108 m/s

● A new technique has been developed for gamma ray and cosmic ray spectroscopy without using single channel analyzer (SCA) or multi channel analyzer (MCA)

● A Data logger to monitor and record the ambient parameters such as temperature, relative humidity and pressure has been developed

● One 10cm X 10cm triple GEM detector has been assembled *

Projects done in EHEP lab●Development of Resistive Plate

Chamber (RPC). Himangshu Neog, SPS, NISER, 6

months

●Detection of particles and gamma photons using plastic scintillators. Akhilesh P Nandan, IISER TVM, 1 month

●Development of detectors for high energy physics experiments.

Sharmili Rudra, Dept. of Applied Physics, University of Calcutta, 3 months

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Publication from NISER on HEP detector● Development of a GEM based detector for the CBM Muon Chamber

(MUCH). S. Biswas et. al. 2013 JINST 8 C12002 doi:10.1088/1748-0221/8/12/C12002.

● Development of RPC using glued bakelite sheets. Viwek Mertiya, Rajesh Ganai, S. Biswas, S. Chattopadhyay, G. Das, C. Marick, S. Saha, and Y. P. Viyogi. Proceedings of the DAE Symposium on Nuclear Physics. Volume 58, (2013), 922-923.

● Performance simulation of a MRPC-based PET Imaging System. Arindam Roy, Arnab Banerjee, Saikat Biswas,

Subhasis Chattopadhyay, Ganesh Das, Satyajit Saha, 2014 JINST 9 C10030 doi:10.1088/1748-0221/9/10/C10030.

● A simple technique for gamma ray and cosmic ray spectroscopy using plastic scintillator. Akhilesh P. Nandan, Sharmili Rudra, Himangshu Neog, M. R. Bhuyan, S. Biswas, S. Mahapatra, B. Mohanty, Rudranarayan Mohanty, Subasha Rout, P. K. Sahu, S. Sahu, V. A. Sakthivel, P. K. Samal [arXiv:1407.7181]

● Development of Data logger for atmospheric pressure, temperature and relative humidity for gas-filled detector. S. Sahu, M. R. Bhuyan, S. Biswas, B. Mohanty, and P. K. Sahu (Accepted in DAE Symposium on Nuclear Physics, 2014)

● Fabrication of Resistive Plate Chamber using Bakelite. Himangshu Neog, Sharmili Rudra, M. R. Bhuyan, S.

Biswas, B. Mohanty, Rudranarayan Mohanty, P. K. Sahu, and S. Sahu (Accepted in DAE Symposium on Nuclear Physics, 2014)

● Cosmic ray spectroscopy using plastic scintillator detector. Sharmili Rudra, Akhilesh P. Nandan, Himangshu Neog,

S. Biswas, S. Mahapatra, B. Mohanty, and P. K. Samal (Accepted in DAE Symposium on Nuclear Physics, 2014)

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Future work● GEM related activities started● Fabrication and systematic studies of GEM for

ALICE TPC up gradation at CERN● We will also get new space exclusively for GEM

activity● Long term test of GEM● Measurement of Ageing of GEM and other gas

detector● Measure the gain and energy resolution for

different configuration● Measure the spark rate and the spark probability● Provision to build gas filled detectors e.g. GEM,

RPC, MRPC etc.● To join CBM, INO and other HEP experiments

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Thank you

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