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A helium gas scintillator active target for photoreaction measurements

In English

Författare

  • Ramsey Al Jebali
  • John R. M. Annand
  • Jan-Olof Adler
  • Iskender Akkurt
  • Emma Buchanan
  • Jason Brudvik
  • Kevin Fissum
  • Simon Gardner
  • David J. Hamilton
  • Kurt Hansen
  • Lennart Isaksson
  • Kenneth Livingston
  • Magnus Lundin
  • John C. McGeorge
  • Ian J. D. MacGregor
  • Roderick MacRae
  • Duncan G. Middleton
  • Andreas J. H. Reiter
  • Guenther Rosner
  • Bent Schroder
  • Johan Sjögren
  • Daria Sokhan
  • Bruno Strandberg
Visa allt

Summary, in English

A multi-cell He gas scintillator active target, designed for the measurement of photoreaction cross sections, is described. The target has four main chambers, giving an overall thickness of 0.103 g/cm(3) at an operating pressure of 2MPa. Scintillations are read out by photomultiplier tubes and the addition of small amounts of N-2 to the He, to shift the scintillation emission from UV to visible, is discussed. First results of measurements at the MAX IV Laboratory tagged-photon facility show that the target has a timing resolution of around 1 ns and can cope well with a high-flux photon beam. The determination of reaction cross sections from target yields relies on a Monte Carlo simulation, which considers scintillation light transport, photodisintegration processes in He-4, background photon interactions in target windows and interactions of the reaction-product particles in the gas and target container. The predictions of this simulation are compared to the measured target response.

Publiceringsår

2015

Språk

Engelska

Publikation/Tidskrift/Serie

European Physical Journal A. Hadrons and Nuclei

Volym

51

Issue

10

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Accelerator Physics and Instrumentation

Status

Published

Projekt

  • Development of Radiation Detectors and Radiation-Detection Techniques

ISBN/ISSN/Övrigt

  • ISSN: 1434-6001