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EXILL - a high-efficiency, high-resolution setup for gamma-spectroscopy at an intense cold neutron beam facility
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SYSNO ASEP 0482518 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title EXILL - a high-efficiency, high-resolution setup for gamma-spectroscopy at an intense cold neutron beam facility Author(s) Jentschel, M. (FR)
Blanc, A. (FR)
de France, G. (FR)
Koster, U. (FR)
Leoni, S. (IT)
Mutti, P. (FR)
Simpson, G. S. (FR)
Krtička, M. (CZ)
Tomandl, Ivo (UJF-V) RID, ORCID, SAI
Valenta, S. (CZ)Number of authors 133 Article number P11003 Source Title Journal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221
Roč. 12, č. 11 (2017)Number of pages 33 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords instrumentation for neutron sources ; gamma detectors ; spectrometers Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Nuclear physics Institutional support UJF-V - RVO:61389005 UT WOS 000414625700003 DOI https://doi.org/10.1088/1748-0221/12/11/P11003 Annotation In the EXILL campaign a highly efficient array of high purity germanium (HPGe) detectors was operated at the cold neutron beam facility PF1B of the Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements of gamma-rays following neutron-induced capture and fission reactions. The setup consisted of a collimation system producing a pencil beam with a thermal capture equivalent flux of about 10(8) ns(-1)cm(2) at the target position and negligible neutron halo. The targetwas surrounded by an array of eight to ten anti-Compton shielded EXOGAMClover detectors, four to six anti-Compton shielded large coaxial GASP detectors and two standard Clover detectors. For a part of the campaign the array was combined with 16 LaBr3:(Ce) detectors from the FATIMA collaboration. The detectorswere arranged in an array of rhombicuboctahedron geometry, providing the possibility to carry out very precise angular correlation and directional-polarization correlation measurements. The triggerless acquisition system allowed a signal collection rate of up to 6 x 10(5) Hz. The data allowed to set multi-fold coincidences to obtain decay schemes and in combination with the FATIMA array of LaBr3:(Ce) detectors to analyze half-lives of excited levels in the pico-to microsecond range. Precise energy and efficiency calibrations of EXILL were performed using standard calibration sources of Ba-133, Co-60 and Eu-152 as well as data from the reactions Al-27(n, gamma)Al-28 and Cl-35(n,gamma)Cl-36 in the energy range from 30 keV up to 10MeV. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2018
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