Modular design for narrow scintillating cells with MRS photodiodes in strong magnetic field for ILC detector

D. Beznosko, G. Blazey, A. Dyshkant, V. Rykalin, J. Schellpffer, V. Zutshi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The experimental results for the narrow scintillating elements with effective area about 20 cm2 are reported. The elements were formed from the single piece of scintillator and were read out via wavelength shifting (WLS) fibers with the Metal/Resistor/Semiconductor (MRS) photodiodes on both ends of each fiber. The count rates were obtained using radioactive source 90Sr, with threshold at about three photoelectrons in each channel and quad coincidences (double coincidences between sensors on each fiber and double coincidences between two neighboring fibers). The formation of the cells from the piece of scintillator by using grooves is discussed, and their performances were tested using the radioactive source by measuring the photomutiplier current using the same WLS fiber. Because effective cell area can be readily enlarged or reduced, this module may be used as an active element for calorimeter or muon system for the design of the future electron-positron linear collider detector. Experimental verification of the performance of the MRS photodiode in a strong magnetic field of 9 T, and the impact a magnet quench at 9.5 T are reported. The measurement method used is described. The results confirm the expectations that the MRS photodiode is insensitive to a strong magnetic field and therefore applicable to calorimetry in the presence of magnetic field. The overall result is of high importance for large multi-channel systems.

Original languageEnglish
Pages (from-to)178-184
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume564
Issue number1
DOIs
Publication statusPublished - Aug 1 2006
Externally publishedYes

Fingerprint

Photodiodes
resistors
Resistors
photodiodes
Semiconductor materials
Magnetic fields
Detectors
fibers
Fibers
detectors
Metals
cells
magnetic fields
metals
Phosphors
scintillation counters
Wavelength
Colliding beam accelerators
Positrons
Calorimetry

Keywords

  • Calorimeter
  • Coincidence trigger
  • Extruded scintillator
  • Magnetic field
  • MRS photodiode
  • Multi-channel

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

Cite this

Modular design for narrow scintillating cells with MRS photodiodes in strong magnetic field for ILC detector. / Beznosko, D.; Blazey, G.; Dyshkant, A.; Rykalin, V.; Schellpffer, J.; Zutshi, V.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 564, No. 1, 01.08.2006, p. 178-184.

Research output: Contribution to journalArticle

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