A detector system for 'absolute' measurements of fission cross sections at n_TOF in the energy range below 200 MeV

被引：0

作者：

Pirovano, E. ^{[1
]}

Manna, A. ^{[2
,3
]}

Aberle, O. ^{[4
]}

Amaducci, S. ^{[5
]}

Colonna, N. ^{[6
]}

Camprini, P. Console ^{[7
]}

Cosentino, L. ^{[5
]}

Dietz, M. ^{[1
]}

Ducasse, Q. ^{[1
]}

Finocchiaro, P. ^{[5
]}

Massimi, C. ^{[2
,3
]}

Mengoni, A. ^{[7
]}

Nolte, R. ^{[1
]}

Radeck, D. ^{[1
]}

Tassan-Got, L. ^{[8
]}

Terranova, N. ^{[9
]}

Vanninic, G. ^{[3
]}

机构：

[1] Phys Tech Bundesanstalt PTB, Bundesallee 100, Braunschweig, Germany

[2] Univ Bologna, Dipartimento Fis & Astron, Viale Carlo Berti Pichat 6-2, Bologna, Italy

[3] Ist Nazl Fis Nucl INFN, Sez Bologna, Viale Carlo Berti Pichat 6-2, Bologna, Italy

[4] European Lab Particle Phys CERN, Esplanade Particules 1, Geneva, Switzerland

[5] INFN Lab Nazl Sud, Via St Sofia 62, Catania, Italy

[6] Ist Nazl Fis Nucl INFN, Sez Bari, Via Giovanni Amendola 173, Bari, Italy

[7] Agenzia Nazl Nuove Tecnol ENEA, Via Martiri Monte Sole 4, Bologna, Italy

[8] Univ Paris Saclay, CNRS IN2P3, IJCLab, Rue Georges Clemenceau 15, Orsay, France

[9] Agenzia Nazl Nuove Tecnol ENEA, Via Enrico Fermi 45, Frascati, Italy

来源：

JOURNAL OF INSTRUMENTATION | 2023年 / 18卷 / 11期

关键词：

dE/dx detectors; Instrumentation and methods for heavy-ion reactions and fission studies; Instrumentation and methods for time-of-flight (TOF) spectroscopy; Neutron detectors (cold; thermal; fast neutrons); ANGULAR-DISTRIBUTION; NEUTRON BEAMS;

D O I：

10.1088/1748-0221/18/11/P11011

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new measurement of the 235U(n,f) cross section was performed at the neutron time-of flight facility n_TOF at CERN. The experiment focused on neutron energies from 20 MeV to several hundred MeV, and was normalized to neutron scattering on hydrogen. This is a measurement first of its kind at this facility, in an energy range that was until now not often explored, so the detector development phase was crucial for its success. Two detectors are presented, a parallel plate fission chamber (PPFC) and a recoil proton telescope (RPT), both dedicated to perform measurements in the incident neutron energy range from 30 MeV to 200 MeV. The experiment was designed to minimize statistical uncertainties in the allocated run time. Several efforts were made to ensure that the systematic effects were understood and under control. The results show that the detectors are suited for measurements at n_TOF above 30 MeV, and indicate the path for possible future lines of development.

引用

页数：36

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