Status and outlook of the neutron time-of-flight facility

Gunsing, F. and Abbondanno, U. and Aerts, G. and Alvarez, H. and Alvarez-Velarde, F. and Andriamonje, S. and Andrzejewski, J. and Assimakopoulos, P. and Audouin, L. and Badurek, G. and Baumann, P. and Becvar, F. and Berthoumieux, E. and Calvino, F. and Cano-Ott, D. and Capote, R. and de Albornoz, A. Carrillo and Cennini, P. and Chepel, V. and Chiaveri, E. and Colonna, N. and Cortes, G. and Couture, A. and Cox, J. and Dahlfors, M. and David, S. and Dillman, I. and Dolfini, R. and Domingo-Pardo, C. and Dridi, W. and Duran, I. and Eleftheriadis, C. and Ferrant, L. and Ferrari, A. and Ferreira-Marques, R. and Frais-Koelbl, H. and Fujii, K. and Furman, W. and Goncalves, I. and Gonzalez-Romero, E. and Goverdovski, A. and Gramegna, F. and Griesmayer, E. and Guerrero, C. and Haas, B. and Haight, R. and Heil, M. and Herrera-Martinez, A. and Igashira, M. and Isaev, S. and Jericha, E. and Kaeppeler, F. and Kadi, Y. and Karadimos, D. and Karamanis, D. and Kerveno, M. and Ketlerov, V. and Koehler, P. and Konovalov, V. and Kossionides, E. and Krticka, M. and Lampoudis, C. and Leeb, H. and Lindote, A. and Lopes, I. and Lozano, M. and Lukic, S. and Marganiec, J. and Marques, L. and Marrone, S. and Martinez, T. and Massimi, C. and Mastinu, P. and Mengoni, A. and Milazzo, P. M. and Moreau, C. and Mosconi, M. and Neves, F. and Oberhummer, H. and O`Brien, S. and Oshima, M. and Pancin, J. and Papachristodoulou, C. and Papadopoulos, C. and Paradela, C. and Patronis, N. and Pavlik, A. and Pavlopoulos, P. and Perrot, L. and Pigni, M. T. and Plag, R. and Plompen, A. and Plukis, A. and Poch, A. and Pretel, C. and Quesada, J. and Rauscher, T. and Reifarth, R. and Rosetti, M. and Rubbia, C. and Rudolf, G. and Rullhusen, P. and Salgado, J. and Sarchiapone, L. and Savvidis, I. and Stephan, C. and Tagliente, G. and Tain, J. L. and Tassan-Got, L. and Tavora, L. and Terlizzi, R. and Vannini, G. and Vaz, P. and Ventura, A. and Villamarin, D. and Vincente, M. C. and Vlachoudis, V. and Vlastou, R. and Voss, F. and Walter, S. and Wendler, H. and Wiescher, M. and Wisshak, K.. (2007) Status and outlook of the neutron time-of-flight facility. Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, Vol. 261, H. 1-2. pp. 925-929.

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Official URL: http://edoc.unibas.ch/dok/A5253885

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Abstract

The neutron time-of-flight facility n_TOF at CERN, fully operational since 2002, combines a high instantaneous neutron flux with high energy resolution. The wide energy range and the high neutron flux per time-of-flight burst result in a much enhanced signal to background ratio for neutron capture of radioactive isotopes and makes this facility well suited for the measurement of high quality neutron-induced reaction cross-sections. Neutrons are created by spallation reactions induced by a pulsed 20 GeV/c proton beam impinging on a lead target. A 5 cm water slab surrounding the lead target serves as a coolant and at the same time as a moderator of the spallation neutron spectrum, providing a wide energy spectrum from 0.1 eV to about 250 MeV. By the end of 2005, a first phase of data taking has been successfully terminated. Fission and capture experiments have been performed on a variety of isotopes of interest for nuclear astrophysics, advanced nuclear technologies and for basic nuclear physics. The instrumentation developed for this facility consists of parallel plate avalanche counter and fission ionization chamber detectors for the fission experiments and of low mass C6D6 detectors and a 4 pi BaF2 total absorption calorimeter for capture experiments. A new data acquisition system, based on sampling of the detector signals, has been developed to cope with the high count rates and to minimize the effective dead time to only a few tens of nanosecond. A second phase of data taking is planned to start in 2007, after an upgrade of the spallation target. On the longer term, the construction of a flight path at 20 in resulting in an increased neutron flux of about a factor of 100 opens new possibilities.

Faculties and Departments:	05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:	Rauscher, Thomas
Item Type:	Article, refereed
Article Subtype:	Research Article
Publisher:	North-Holland
ISSN:	0168-583X
Note:	Publication type according to Uni Basel Research Database: Journal article
Related URLs:	Document
Identification Number:	doi: 10.1016/j.nimb.2007.03.096 isi: 000248784100221
Last Modified:	22 Mar 2012 14:27
Deposited On:	22 Mar 2012 13:57

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