Digital pulse-timing technique for the neutron detector array NEDA

View/ Open
Access
info:eu-repo/semantics/closedAccessDate
2015Author
Modamio, V.Valiente-Dobon, J. J.
Jaworski, G.
Hueyuek, T.
Triossi, A.
Egea, J.
Di Nitto, A.
Soederstroem, P. -A.
Agramunt Ros, J.
de Angelis, G.
de France, G.
Erduran, Mustafa Nizamettin
Erturk, S.
Gadea, A.
Gonzalez, V.
Kownacki, J.
Moszynski, M.
Nyberg, J.
Palacz, M.
Sanchis, E.
Wadsworthm, R.
Metadata
Show full item recordAbstract
A new digital pulse-timing algorithm, to be used with the future neutron detector array NEDA, has been developed and tested. The time resolution of four 5 in diameter photomultiplier tubes (XP4512, R4144, R11833-100, and ET9390-kb), coupled to a cylindrical 5 in by 5 in BC501A liquict scintillator detector was measured by employing digital sampling electronics and a constant fraction discriminator (CFD) algorithm. The zero crossing of the CM algorithm was obtained with a cubic spline interpolation, which was continuous up to the second derivative. The performance of the algorithm was studied at sampling rates of 500 MS/s and 200 MS/s. The time resolution obtained with the digital electronics was compared to the values acquired with a standard analog CFD. The result of this comparison shows that the time resolution from the analog and the digital measurements at 500 MS/s and at 200 MS/s are within 15% for all the tested photomultiplier tubes. (C) 2014 Elsevier B.V. All rights reserved.