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

Journal Article · Sat Mar 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4866021· OSTI ID:22254993

Gwynne, D.; Doria, D.; Ahmed, H.; Hanton, F. ^[1]; Cerchez, M.; Swantusch, M.; Willi, O. ^[2]; Fernandez, J. ^[3]; Gray, R. J.; MacLellan, D. A.; McKenna, P. ^[4]; Green, J. S.; Neely, D. ^[5]; Najmudin, Z.; Streeter, M. ^[6]; Ruiz, J. A. ^[3]; Schiavi, A. ^[7]; Zepf, M. ^[1]; Borghesi, M. ^[1]

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1. Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom)
2. Institut für Laser-und Plasmaphysik, Heinrich-Heine-Universität, Düsseldorf (Germany)
3. Instituto de Fusión Nuclear UPM, Jose Gutierrez Abascal 2, E28006 Madrid (Spain)
4. Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG (United Kingdom)
5. Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX (United Kingdom)
6. Blackett Laboratory, Imperial College, London SW7 2AZ (United Kingdom)
7. Dipartimento SBAI, Università di Roma “La Sapienza,” 00161 Rome (Italy)

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.

• OSTI ID: 22254993
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION SPECTRA
EFFECTIVE CHARGE
INTERACTIONS
ION BEAMS
LASERS
MEV RANGE 10-100
NUCLEONS
PARABOLAS
PLATES
SPECTROMETERS