A helium gas scintillator active target for photoreaction measurements

Al Jebali, R. A.I. et al. (2015) A helium gas scintillator active target for photoreaction measurements. European Physical Journal A, 51, 123. (doi:10.1140/epja/i2015-15123-y)

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Abstract

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/cm3 at an operating pressure of 2 MPa. Scintillations are read out by photomultiplier tubes and the addition of small amounts of N2 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 4He, 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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sokhan, Dr Daria and Strandberg, Mr Bruno and McGeorge, Dr John and MacGregor, Professor I and Al Jebali, Dr Ramsey and Livingston, Dr Kenneth and Gardner, Mr Simon and Annand, Dr John and Hamilton, Dr David and Rosner, Professor Guenther
Authors: Al Jebali, R. A.I., Annand, J. R.M., Adler, J.-O., Akkurt, I., Buchanan, E., Brudvik, J., Fissum, K., Gardner, S., Hamilton, D. J., Hansen, K., Isaksson, L., Livingston, K., Lundin, M., McGeorge, J. C., MacGregor, I. J.D., MacRae, R., Middleton, D. G., Reiter, A. J. H., Rosner, G., Schröder, B., Sjögren, J., Sokhan, D., and Strandberg, B.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal A
Publisher:Springer
ISSN:1434-6001
ISSN (Online):1434-601X

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
570711Nuclear Physics GroupDavid IrelandScience & Technologies Facilities Council (STFC)ST/J000175/1P&A - PHYSICS & ASTRONOMY
507271Illuminating strongly interacting matterI MacgregorScience & Technologies Facilities Council (STFC)ST/G008604/1P&A - PHYSICS & ASTRONOMY
519881Studies of Few-Body Nuclei with Tagged Photons at MAX-labJohn AnnandScience & Technologies Facilities Council (STFC)ST/H0031771/1P&A - PHYSICS & ASTRONOMY