The Braunschweig accelerator facility for fast neutron research: 1: Building design and accelerators

doi:10.1016/0029-554X(80)90928-3

Nuclear Instruments and Methods

Volume 169, Issue 3, 1 March 1980, Pages 349-358

https://doi.org/10.1016/0029-554X(80)90928-3 Get rights and content

Abstract

A 3.75 MeV Van de Graaff generator and an energy variable isochronous cyclotron are used to produce “monoenergetic” neutrons with continuously variable energy between about 10 keV and 31.5 MeV. Both accelerators can be operated in a nanosecond pulsed beam mode, as needed for time-of-flight spectroscopy. Experiments can be performed in a low backscatter experimental hall. A heavy collimator system with five flight paths is mounted in a fixed position on the ground floor. The compact cyclotron is positioned on a swivel arm and can be moved for angular distribution measurements.

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To calculate theoretical response functions, the calibration parameters (Q0, Ge) and the light output and resolution functions are required. They have been determined from measurements in quasi-monoenergetic γ-ray and neutron fields carried out at the EC-JRC-IRMM in Geel and at the PTB Ion Accelerator Facility (PIAF) of the PTB in Braunschweig [54], following the procedures described in Ref. [33]. The parameters in the analytical function in Eqs. (4)–(6) were derived from a least squares adjustment to experimental response functions using the theoretical ones discussed in Section 4.
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The Braunschweig accelerator facility for fast neutron research: 1: Building design and accelerators

Abstract

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

PTB-Bericht ND-9

PTB-Mitt.