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Publication > 'Evaluation of the ATLAS-MPX Devices for Neutron Field Spectral Composition Measurement in the ATLAS Experiment'

Evaluation of the ATLAS-MPX Devices for Neutron Field Spectral Composition Measurement in the ATLAS Experiment

Author

Vykydal Zdeněk, Ing.	IEAP
Bouchami Jihène	Université de Montréal
Campbell Michael	CERN
Doležal Zdeněk	Nuclear Center, Faculty of Mathematics and Physics, Charles University, V Holesovickach 2, Praha 8 CZ-180 00, Czech Republic
Fiederle Michael, Dr.	FMF University of Freiburg
Greiffenberg Dominic	FMF University of Freiburg
Gutierrez Andrea	Université de Montréal
Heijne Erik, Dr.	CERN
Holý Tomáš, Ing.	IEAP
Idarraga John	University of Montreal
Jakůbek Jan, Ing. Ph.D.	IEAP
Král Vlastimil, Ing.	IEAP
Králík Miloslav	ČMI
Lebel Celine	University of Montreal
Leroy Claude, Prof.	Universite de Montreal, Montreal (Quebec), Canada H3C 3J7
Llopart Xavier	CERN
Maneuski Dzmitry	University of Glasgow
Nessi Marzio, Dr.	CERN
O/'Shea Val, Dr.	University of Glasgow
Platkevič Michal, Ing.	IEAP
Pospíšil Stanislav, Ing. DrSc.	IEAP
Sochor V	CMI in Prague
Šolc Jaroslav, Ing.	IEAP
Suk Michal, Prof.	FMP Charles University
Tlustos Lukas	CERN
Vichoudis Paschalis	CERN
Visschers Jan	NIKHEF
Wilhelm Ivan	Charles University in Prague
Žemlička Jan, Bc.	IEAP

Year

2009

Scientific journal

2008 IEEE Nuclear Science Symposium Conference Record, Pages: 1628-1632, doi: 10.1109/NSSMIC.2008.4774829

Web

http://dx.doi.org/10.1109/NSSMIC.2008.4774829

Abstract

Within the framework of the MPX-ATLAS collaboration a network of 15 Medipix2-based devices (MPX-ATLAS devices) has been installed at various positions in the ATLAS detector. The aim of the network is to perform real-time measurement of spectral characteristics and composition of radiation inside the ATLAS detector during its operation. This contribution is focused on the determination of the neutron component of the mixed radiation field. To identify different types of neutrons the 300 µm thick silicon sensor area of each MPX-ATLAS device is divided into several regions covered by different neutron converter materials. A 6LiF layer is used for thermal neutron detection and polyethylene foil for fast neutron detection. The calibration of all devices with known neutron sources (252Cf, AmBe, thermal neutrons, Van de Graaff accelerator beam) was performed in order to determine the detection efficiencies of all regions for different neutron energies. Using these calibrations it is possible to estimate spectral composition of unknown neutron field by comparing the responses from different regions of the MPX-ATLAS detector.

Cite article as:

Z. Vykydal, J. Bouchami, M. Campbell, Z. Doležal, M. Fiederle, D. Greiffenberg, A. Gutierrez, E. Heijne, T. Holý, J. Idarraga, J. Jakůbek, V. Král, M. Králík, C. Lebel, C. Leroy, X. Llopart, D. Maneuski, M. Nessi, V. O/'Shea, M. Platkevič, S. Pospíšil, V. Sochor, J. Šolc, M. Suk, L. Tlustos, P. Vichoudis, J. Visschers, I. Wilhelm, J. Žemlička, "Evaluation of the ATLAS-MPX Devices for Neutron Field Spectral Composition Measurement in the ATLAS Experiment", 2008 IEEE Nuclear Science Symposium Conference Record, Pages: 1628-1632, doi: 10.1109/NSSMIC.2008.4774829 (2009)