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Fast detectors for magnetized near detectors in Superbeam, beta-beam, neutrino factory

Accurate position resolution (mm) triangular shaped scintillator barsMagnetic field si-PMT readout

MICE calorimeter = 1m3

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

First test in T9 beam last week:

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MaterialsFor 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 pionsShower 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.

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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?

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A Low Energy Muon beam in H8 line

I.Efthymiopoulos, CERN/EN-MEF

6 Beam design principle

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A Low Energy Muon beam in H8 line

I.Efthymiopoulos, CERN/EN-MEF

7 Issues to optimise

Energy of incoming secondary beam and target material

Overall length of the tertiary beam linePosition of the detector wrt the muon background

from the secondary beamTypically 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

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A Low Energy Muon beam in H8 line

I.Efthymiopoulos, CERN/EN-MEF

8 Area Layout – EHN1 buiidng

Detector Area

SecondaryTarget

Experimental

Magnet

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-- Note drafted for Minerva collaboration-- Bravar will attend the MINERvA collab. Meeting

-- writing the AIDA proposal startedRequest 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€/kgmechanics 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€