title: A charged-particle microbeam: II. A single-particle micro-collimation and detection system.
abstract: The use of a charged-particle microbeam provides a unique opportunity to control precisely, the number of particles traversing individual cells and the localization of dose within the cell. The accuracy of 'aiming' and of delivering a precise number of particles crucially depends on the design and implementation of the collimation and detection system. This report describes the methods available for collimating and detecting energetic particles in the context of a radiobiological microbeam. The arrangement developed at the Gray Laboratory uses either a 'V'-groove or a thick-walled glass capillary to achieve 2-5 microns spatial resolution. The particle detection system uses an 18 microns thick transmission scintillator and photomultiplier tube to detect particles with > 99% efficiency.
authors.affiliation: Gray Laboratory Cancer Research Trust, Mount Vernon Hospital, Northwood, Middlesex, UK.
authors.forename: M
authors.initials: M
authors.lastname: Folkard
authors.forename: B
authors.initials: B
authors.lastname: Vojnovic
authors.forename: K J
authors.initials: KJ
authors.lastname: Hollis
authors.forename: A G
authors.initials: AG
authors.lastname: Bowey
authors.forename: S J
authors.initials: SJ
authors.lastname: Watts
authors.forename: G
authors.initials: G
authors.lastname: Schettino
authors.forename: K M
authors.initials: KM
authors.lastname: Prise
authors.forename: B D
authors.initials: BD
authors.lastname: Michael
mesh_terms: D010315:Particle Accelerators; D011853:Radiobiology / Q000295:instrumentation / Q000379:methods*