Indigenous R

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Indigenous R D efforts for HEP detectors Glass
Resistive Plate Chambers for INO experiment

• Proposer B.Satyanarayana
• Mentor Prof Naba K Mondal
• Department of High Energy Physics,
• TIFR, Mumbai, 400005

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What is the need?

• Detectors form the core of scientific research!
• What is discoverable in an experiment is often
  limited by capabilities of the employed detector
• Why do we need indigenous development?
• Need for large and sustained efforts
• Rich experience of various detector development
  activities for KGF, DZERO, CMS experiments
• Now, the proposed Indian-based Neutrino
  Observatory (INO) is looking for a new detector!

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The proposed INO detector

• RPC dimension 3m X 2m
• No of chambers 11K
• No of channels 220K
• No of TDC channels 3K

Magnetised iron calorimeter
Iron
140 layers
RPC
35KTons
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Why RPCs?

• Rugged, cheap and easy to produce large area
  cells
• Good timing, counting rate, spatial resolution,
  large signals
• Can take roles of tracking, timing, particle
  identification and (even) calorimeter detectors
• Being used or planned for many HEP, Cosmic ray,
  astroparticle physics experiments
• All four LHC experiments, Belle, Babar, HARP,
  EAS-TOP
• Choice of designs, modes of operation, gases etc

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A typical RPC construction
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RPC R D infrastructure at TIFR
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A few of our preliminary results
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Proposal for new work

• Double-gap, multi-gap and Hybrid designs
• Avalanche versus streamer modes of operation
• Gas mixture studies and optimization
• MIP efficiency issues
• Improvement of time resolution
• Special RPCs for finer spatial resolution
• The all important ageing concerns

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Proposed plan for new work

• Gases, mixing, circulation and monitoring systems
• Industrial help for resistive coats on electrodes
  etc.
• In-house development of electronics and DAQ
• Simulation studies Process, Device and Detector
• Meeting INO design requirements in the process
• RPC deployments beyond INO
• Possible spinoffs

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A proposed spinoff

• Positron Emission Tomography (PET)
• A radiotracer imaging technique using positron
  emitting radio nuclides
• Applications include
• Early detection of cancer
• Neurophysiological studies
• Quantification of brain functions
• Natural advantages in case of RPC
• Intrinsic layered structure (100 layers)
• Simple and economic construction
• Time-of-Flight capability
• Considerably lower radiation levels for
  whole-body PET