Development of a higher power cooling system for lithium targets. (December 2015)

• Record Type: Journal Article
• Authors: Phoenix, B.; Green, S.; Scott, M.C.; Bennett, J.R.J.; Edgecock, T.R.
• Is Part Of: Applied radiation and isotopes. Volume 106(2015:Dec.)
• Page Start: 49
• Page End: 52
• Publication Date: 2015-12
• Subjects: Lithium target -- BNCT -- Cooling; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2015.07.050
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: The accelerator based Boron Neutron Capture Therapy beam at the University of Birmingham is based around a solid thick lithium target cooled by heavy water. Significant upgrades to Birmingham's Dynamitron accelerator are planned prior to commencing a clinical trial. These upgrades will result in an increase in maximum achievable beam current to at least 3 mA. Various upgrades to the target cooling system to cope with this increased power have been investigated. Tests of a phase change coolant known as "binary ice" have been carried out using an induction heater to provide a comparable power input to the Dynamitron beam. The experimental data shows no improvement over chilled water in the submerged jet system, with both systems exhibiting the same heat input to target temperature relation for a given flow rate. The relationship between the cooling circuit pumping rate and the target temperature in the submerged jet system has also been tested. Abstract : Highlights: Our submerged jet high power lithium target cooling system is described. Results for the effect of changing pumping power are presented. A binary ice, phase change coolant was tested. No advantage was found over water.