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INDIA-BASED NEUTRINO OBSERVATORY (INO) STATUS REPORT

INDIA-BASED NEUTRINO OBSERVATORY (INO) STATUS REPORT. Naba K Mondal Tata Institute of Fundamental Research Mumbai, India. NUFACT Scoping Study Meeting at CERN, 22-24 September, 2005. India-based Neutrino Observatory initiative.

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INDIA-BASED NEUTRINO OBSERVATORY (INO) STATUS REPORT

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  1. INDIA-BASED NEUTRINO OBSERVATORY (INO) STATUS REPORT Naba K Mondal Tata Institute of Fundamental Research Mumbai, India NUFACT Scoping Study Meeting at CERN, 22-24 September, 2005

  2. India-based Neutrino Observatory initiative Goal: A large mass detector with charge identification capability • Two phase approach: • R & D and Construction • Phase I • Physics studies, • Detector R & D, • Site survey, • Human resource development • Phase II • Construction of the detector Operation of the Detector Phase I Physics with Atmospheric Neutrinos Phase II Physics with Neutrino beam from a factory NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  3. Physics using atmospheric neutrinos during Phase I • Reconfirm atmospheric neutrino oscillation • Improved measurement of oscillation parameters • Search for potential matter effect in neutrino oscillation • Determining the sign of Dm223 using matter effect • Discrimination between nm nt and nm  ns oscillation • Probing CP and CPT violation • Constraining long range leptonic forces • Ultra high energy neutrinos and muons NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  4. Physics with Neutrino beam from NUFACT – Phase II • Determination of q13 • Sign of Dm223 • Probing CP violation in leptonic sector • Matter effect in nm ntoscillation NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  5. Role of Phase I as a test detector for the factory era • Currently we only have experience of running magnetised iron detector of upto 5 kton. No experience of running a large mass magnetised detector. • So during phase I of the operation of the INO detector while we do interesting physics using atmospheric neutrinos, it can also be used as a test detector for the factory era and to improve upon it . • The modular nature of this detector can even allow us to try out more than one options for the active elements like RPC, scintillators … • While we have a supporting funding agency in India we need international support and collaboration to achieve this. NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  6. N up(L/E) N down(L’/E) = P(nm nm; L/E) Disappearance of Vs. L/E The disappearance probability can be measured with a single detector and two equal sources: = 1 - sin2 (2Q) sin2 (1.27 Dm2L/E) NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  7. Matter Effect & Sign of D31 from event rate m- m+ NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  8. Sign of Dm232 frommatter induced asymmetry d32 > 0 d32 < 0 The neutrino and anti-neutrino up/down event ratios are different from each other as well as different with direct and inverted mass hierarchies. Q13 = 5,7,9,11 NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  9. nm nt vs nm ns nmnt events will give rise to excess of muon less events. There will be excess of upgoing muonless events. NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  10. Choice of Neutrino Source and Detector • Neutrino Source • Need to cover a large L/E range • Large L range • Large En Range • Use Atmospheric neutrinos as source • Detector Choice • Should have large target mass ( 50-100 kT) • Good tracking and Energy resolution ( tracking calorimeter) • Good directionality ( <= 1 nsec time resolution ) • Charge identification • Ease of construction • Modularity • Complimentarity with other existing and proposed detectors • Use magnetised iron as target mass and RPC as active detector medium NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  11. INO Detector Concept NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  12. The Magnet NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  13. RPC Efficiencies and Timing RPC working in Streamer mode NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  14. RPC R & D CMS bakelite RPC 73 cm X 42.5 cm 120 cm X 90 cm Glass RPC Built at TIFR CMS RPC on test stand NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  15. Detector Simulation • Used NUANCE Neutrino Event Generator • Generate atmospheric neutrino events inside INO detector • Used Atmospheric Neutrino Flux of Honda et. al. • GEANT detector simulation package • Simulate the detector response for the neutrino event • Generated 5 years of simulated data equivalent to 5 years of running the experiment. • Analysed oscillation data at two levels • Using NUANCE output and kinematic resolution function • Using full detector simulation • Obtained preliminary results so far. Detailed simulation is underway. NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  16. LOCATION OF INO • PUSHEP (Pykara Ultimate Stage Hydro Electric Project) in South India NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  17. PUSHEP NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  18. Underground Cavern Experimental Hall Layout of the Underground Cavern Size of the experimental hall 150 m X 22 m X 30 m Parking & Storage Access tunnel Experimental Hall Electronics NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  19. Status of the Proposal • Some R & D fund was made available. • Several institutes from India are currently involved in various INO related activities. • Underground Site has been chosen. • A presentation to the funding authorities was made on 1st May 2005. • A second presentation was made on 28th of August, 2005 to the Scientific Advisory Committee to the Indian Prime Minister (SAC-PM). Response of the committee is very positive. • We are in touch with the global neutrino community for support and participation. NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

  20. Summary • A large magnetised detector of 50-100 kton is needed to achieve some of the very exciting physics goals using atmospheric neutrinos. • A case for such a detector was highlighted earlier by the Monolith Collaboration. • Physics case for such a detector is strong as evident from recent publications. • It will complement the existing and planned water cherenkov detectors. • Can be used as a far detector during neutrino factory era. • We have started a very active R & D work towards building such a detector. • Apart from the physics using atmospheric neutrinos, this detector can act as the R & D center for a magnetised iron detector during factory era. NUFACT Scoping Study meeting at CERN, 22-24 Sep, 2005

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