1. 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,

2. DAE Vision 2020, Subtopic 3.8, May 3-4, 2004
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!
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

3. 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
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

4. DAE Vision 2020, Subtopic 3.8, May 3-4, 2004
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
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

5. A typical RPC construction
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

6. RPC R & D infrastructure at TIFR
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

7. A few of our preliminary results
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

8. DAE Vision 2020, Subtopic 3.8, May 3-4, 2004
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
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

9. 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 …
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004

10. DAE Vision 2020, Subtopic 3.8, May 3-4, 2004
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
B.Satyanarayana, DHEP, TIFR, Mumbai
DAE Vision 2020, Subtopic 3.8, May 3-4, 2004