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Operation and performance of the ASHIPH counters at the KEDR detector

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN: 0168-9002, Vol: 824, Page: 79-82
2016
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Article Description

In 2014 the fully installed ASHIPH (Aerogel, SHifter, PHotomultiplier) system began its operation in the KEDR experiment at the VEPP-4 M e+e− -collider. The system contains 1000 liters of aerogel with refractive index n=1.05 in 160 counters that are arranged in two layers. Cherenkov light collection is preformed by means of wavelength shifters (WLS). 160 Micro-Channel Plate (MCP) PMTs with multialkali photocathode are used as photodetectors. Efficiency of relativistic particles detection was measured with e+e−→e+e− events and cosmic muons. Detection efficiency for under-threshold particles was measured with cosmic muons. From these data π/K -separation of 4 σ at the momentum 1.2 GeV/c was obtained.

Bibliographic Details

A. Yu Barnyakov; M. Yu Barnyakov; V. S. Boborovnikov; A. R. Buzykaev; A. A. Katcin; S. A. Kononov; E. A. Kravchenko; I. A. Kuyanov; A. P. Onuchin; I. V. Ovtin; V. A. Rodiakin; A. F. Danilyuk

Elsevier BV

Physics and Astronomy

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