IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
Česky English
IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
CTU - Czech Technical University in Prague
Publication  > Articles in Impacted Journals  > 'Measurements of fast-neutron-induced signals in pad detectors'
Measurements of fast-neutron-induced signals in pad detectors

Author
Šimečková Eva Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Rez near Prague, CZ-25068, Czech Republic

Year
2006

Scientific journal
NIM A 563 (2006) 263–267

Web


Abstract
The aim of this work was to understand possible fast neutron contribution to background signals in the Semiconductor Tracker (SCT) of the ATLAS detector which is built on LHC at CERN. We measured current pulses induced by fast-neutron reactions in silicon pad detectors. Neutrons were produced at the Rez cyclotron by means of the (p,n) reaction on a thick beryllium target. Current pulses were stored by a fast digital oscilloscope for off-line analysis. Pulse-height spectra, corresponding to neutron interactions in the detector mainly due to (n,p) and (n,alpha) reactions, were obtained by integration of the pulses. The sensitivity of the detector against neutrons was estimated from analysis of the distribution of time intervals between two subsequent pulses. The neutron-induced signals correspond to an average energy deposition of several MeV and arise in the silicon detector of 1 cm^2 area with an average time spacing of about 575 micros. Results are compared with Monte-Carlo simulations.

Cite article as:
E. Šimečková, "Measurements of fast-neutron-induced signals in pad detectors", NIM A 563 (2006) 263–267 (2006)

Search
10th Anniversary of IEAP