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Development of Fast Detectors for Magnetized Near Detectors: A Step Towards Neutrino Beam Research

This project focuses on creating fast detectors for magnetized near detectors in neutrino beam research, with a 1m³ calorimeter with accurate mm-level position resolution. Triangular shaped scintillator bars with si-PMT readout are utilized for improved detection. The aim is to expose particles ranging from 250 MeV/c to 10 GeV/c, including electrons, pions, and muons, to study their charge and stopping properties. The construction involves 48 planes of 64 scintillator bars, with variable density achievable through spacing planes. Collaboration with CERN and Fermilab is essential for successful material procurement and beam line setup.

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Development of Fast Detectors for Magnetized Near Detectors: A Step Towards Neutrino Beam Research

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  1. Fast detectors for magnetized near detectors in Superbeam, beta-beam, neutrino factory MICE calorimeter = 1m3 Accurate position resolution (mm)  triangular shaped scintillator bars Magnetic field  si-PMT readout First test in T9 beam last week: Next step: test at CERN in Dipole magnet in H8)  Variable density by spacing planes -- reconstruction of showering electrons -- stopping properties of pions and muons

  2. Materials For 48 planes of 64 scintillator about 1m long bars -- scintillator: assume Fermilab can provide as for EMR -- SiPM and electronics in a first iteration can use spaers from the T2K EMCAL (contacts D. Wark, C. Touramanis) -- ibid for electronics with 48 front-end and 2 back end boards. -- not fast electronics (not suited for MICE beam, OK for CERN beam) Construction in independent planes mounted on a extendable frame, allowing density from 1 to ~0.4 (air gaps) Aims: -- expose to 250 MeV/c to 10 GeV/c particles (e, pi, mu) Charge ID for electrons, stopping ID for charged mu and pi and protons. Interactions of pions Shower energy and angle? -- contact at CERN with Ilias Efthymiopoulos (NEU2012) for beam line. To be checked: incoming particle ID. (TOF, CKOV) For stopping particles could prefer MICE beam.

  3. Following steps: -- use same or similar planes as detector for MIND situated outside magnet -- develop cheap electronics to envisage mass prodiction -- develop >15 m long scintillator bars Requests from this group: -- software for test beam simulation and analysis -- simulation of electrons in density d=1, ½, 1/3 -- which is your predicted optimum?

  4. A Low Energy Muon beam in H8 line Beam design principle 6 I.Efthymiopoulos, CERN/EN-MEF

  5. A Low Energy Muon beam in H8 line Issues to optimise 7 I.Efthymiopoulos, CERN/EN-MEF Energy of incoming secondary beam and target material Overall length of the tertiary beam line Position of the detector wrt the muon background from the secondary beam Typically 1% of icoming muon flux in a 10x10cm2 area on the beam axis AND another 1% in a 1m2 area outside Expected (~measured) pion rate: ~1kHz @ 1 GeV/c

  6. A Low Energy Muon beam in H8 line Area Layout – EHN1 buiidng 8 Detector Area Secondary Target Experimental Magnet I.Efthymiopoulos, CERN/EN-MEF

  7. -- Note drafted for Minerva collaboration -- Bravar will attend the MINERvA collab. Meeting -- writing the AIDA proposal started Request begins to look like this (for the MIND and for the beam instrumentation) 50 Ton baby-MIND 100k€ *1(radius)*2(long)*8(d)*2€/kg mechanics 30k€ Detectors (1m^3) incl WLS fibre 25k€ Electronics 60k€ Beam instrumentation Cherenkov 10k€ (very fast TOF) 20k€ DAQ and control room items 30k€ Total hardware 240k€ 1 postdoc for 4 years 250k€ (this is the most important!) total 490k€

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