KTAG: The Kaon Identification Detector for CERN experiment NA62

Fry, JR (2016) KTAG: The Kaon Identification Detector for CERN experiment NA62. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 824. pp. 96-98.

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Abstract

In the study of ultra-rare kaon decays, CERN experiment NA62 exploits an unseparated monochromatic (75 GeV/c) beam of charged particles of flux 800 MHz, of which 50 MHz are K+ . Kaons are identified with more than 95% efficiency, a time resolution of better than 100 ps, and misidentification of less than 10-4 using KTAG, a differential, ring-focussed, Cherenkov detector. KTAG utilises 8 sets of 48 Hamamatsu PMTs, of which 32 are of type 9880 and 16 of type 7400, with signals fed directly to the differential inputs of NINO front-end boards and then to TDC cards within the TEL62 system. Leading and trailing edges of the PMT signal are digitised, enabling slewing corrections to be made, and a mean hit rate of 5 MHz per PMT is supported. The electronics is housed within a cooled and insulated Faraday cage with environmental monitoring capabilities.

Item Type:	Article
Uncontrolled Keywords:	KTAG, Cherenkov detectors, Fast timing, Photomultipliers
Depositing User:	Symplectic Admin
Date Deposited:	02 Nov 2016 10:33
Last Modified:	19 Jan 2023 07:26
DOI:	10.1016/j.nima.2015.10.090
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3004262