Modified Thomson spectrometer design for high energy, multi-species ion sources

A modification to the standard Thomson parabola spectrometer is discussed, which is designed to measure high energy (tens of MeV/nucleon), broad bandwidth spectra of multi-species ions accelerated by intense laser plasma interactions. It is proposed to implement a pair of extended, trapezoidal shape...

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Bibliographic Details
Published in:Review of scientific instruments 2014-03, Vol.85 (3), p.033304-033304
Main Authors: Gwynne, D, Kar, S, Doria, D, Ahmed, H, Cerchez, M, Fernandez, J, Gray, R J, Green, J S, Hanton, F, MacLellan, D A, McKenna, P, Najmudin, Z, Neely, D, Ruiz, J A, Schiavi, A, Streeter, M, Swantusch, M, Willi, O, Zepf, M, Borghesi, M
Format: Article
Language:English
Subjects:
ABSORPTION SPECTRA
Design modifications
EFFECTIVE CHARGE
Energy measurement
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
INTERACTIONS
ION BEAMS
Ion sources
Laser plasma interactions
Laser plasmas
LASERS
MEV RANGE 10-100
NUCLEONS
PARABOLAS
Plasma interactions
PLATES
Rectangular plates
Scientific apparatus & instruments
SPECTROMETERS
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Summary:A modification to the standard Thomson parabola spectrometer is discussed, which is designed to measure high energy (tens of MeV/nucleon), broad bandwidth spectra of multi-species ions accelerated by intense laser plasma interactions. It is proposed to implement a pair of extended, trapezoidal shaped electric plates, which will not only resolve ion traces at high energies, but will also retain the lower energy part of the spectrum. While a longer (along the axis of the undeflected ion beam direction) electric plate design provides effective charge state separation at the high energy end of the spectrum, the proposed new trapezoidal shape will enable the low energy ions to reach the detector, which would have been clipped or blocked by simply extending the rectangular plates to enhance the electrostatic deflection.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4866021