The design of the TASD (totally active scintillator detector) prototype
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ORS AND METHODS OF INVESTIGATION
The Design of the TASD (Totally Active Scintillator Detector) Prototype a, b a, b, c A. A. V. V. Mefodiev Mefodieva, b ** and and Yu. Yu. G. G. Kudenko Kudenkoa, b, c a a
Moscow Moscow Institute Institute of of Physics Physics and and Technology Technology (State (State University), University), Dolgoprudny, Dolgoprudny, Moscow Moscow oblast, oblast, 141700 141700 Russia Russia bb Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 117312 Russia cc National Research Nuclear University MEPhI, Moscow, 115409 Russia *email: [email protected] Received January 23, 2015
Abstract—Totally active and magnetic segmented scintillation neutrino detectors are developed for the next generation accelerator neutrino experiments. Such detectors will incorporate scintillation modules with scin tillation counters that form X and Y planes. A single counter is a 7 × 10 × 90 mm3 scintillation bar with glued in wavelengthshifting fibers and micropixel avalanche photodiodes. The results of measurements of the parameters of these detectors are presented. Keywords: neutrino detectors, scintillation counters, micropixel avalanche photodiodes. DOI: 10.1134/S1063778815130232
of about 5 m and a diameter of 5 m filled with argon under a pressure of 20 bar. The timeprojection cham ber (TPC) surrounded by scintillation detectors is located inside this cylinder. The detector resides in a magnetic field of 0.5 T. The magnetized iron neutrino detector (MIND) is composed of magnetized steel plates with scintillation detectors mounted between
INTRODUCTION Far and near neutrino detectors are planned to be designed and constructed in the European LAGUNA LBNO project [1]. One possible design of the near detector is shown in Fig. 1. It can be seen that the detector will have the shape of a cylinder with a length 1.0 m
3.0 m
1.0 m 0.5 m
Return yoke Al coil
NOMAD ECAL
5.0 m MIND
Alrgon gas pressure vessel B
Beam
E
Flange ∅ = 5.0 m TPC charge readout Dipole coil
Central cathode Ar fiducial volume TASD calorimeter
Fig. 1. Diagram of the near detector developed for the LAGUNALBNO project.
1567
1568
MEFODIEV, KUDENKO Scintrillator Module = 2 planes Scintrillator plane
2.4 m
Conductor coil
1.5 m
B
1.0 m
B
0.9 m
Detector plane (x–y or u–v layer)
1.5 m Be
wsei
am
Isei hsei
3.0 cm 1.5 cm Scint. module: 1 Steel: 1
3.0 m
tgap
hsteel
tsteel 50
51
Fig. 2. Baby MIND: geometric dimensions and the way the steel sheets are magnetized.
X plane 2 Y plane 1 X plane 1
Fig. 3. TASD detector prototype.
them. This detector allows one to determine the sign and the momentum of charged particles produced in neutrino interactions within the detector volume. The process of reconstruction of events in this detector is a fairly simple one: it consists in selecting the tracks longer than, for example, 100 cm, analyzing the ver tex, extracting the calorimetric data on the event, and reconstructing the hadron interaction component. The Baby MIND and TASD (Totally Active Scin tillator Detector)
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