A spectrometer for ultrashort gamma-ray pulses with photon energies greater than 10 MeV
Journal article, 2018
© 2018 Author(s). We present a design for a pixelated scintillator based gamma-ray spectrometer for non-linear inverse Compton scattering experiments. By colliding a laser wakefield accelerated electron beam with a tightly focused, intense laser pulse, gamma-ray photons up to 100 MeV energies and with few femtosecond duration may be produced. To measure the energy spectrum and angular distribution, a 33 × 47 array of cesium-iodide crystals was oriented such that the 47 crystal length axis was parallel to the gamma-ray beam and the 33 crystal length axis was oriented in the vertical direction. Using an iterative deconvolution method similar to the YOGI code, modeling of the scintillator response using GEANT4 and fitting to a quantum Monte Carlo calculated photon spectrum, we are able to extract the gamma ray spectra generated by the inverse Compton interaction.
Author
K. T. Behm
University of Michigan
J. M. Cole
Imperial College London
A. S. Joglekar
University of California
E. Gerstmayr
Imperial College London
J. C. Wood
Imperial College London
C. D. Baird
University of York
Tom Blackburn
Chalmers, Physics, Theoretical Physics
M. J. Duff
University of Strathclyde
Christopher Harvey
Chalmers, Physics, Theoretical Physics
Antony Ilderton
University of Plymouth
Chalmers, Physics, Theoretical Physics
S. Kuschel
Friedrich Schiller University Jena
S. P. D. Mangles
Imperial College London
Mattias Marklund
Chalmers, Physics, Theoretical Physics
P. McKenna
University of Strathclyde
C. D. Murphy
University of York
Z. Najmudin
Imperial College London
K. Poder
Imperial College London
C. P. Ridgers
University of York
G. Sarri
Queen's University Belfast
G. M. Samarin
Queen's University Belfast
D. R. Symes
STFC Rutherford Appleton Laboratory
J. Warwick
Queen's University Belfast
M. Zepf
Friedrich Schiller University Jena
Queen's University Belfast
K. Krushelnick
University of Michigan
A. G. R. Thomas
Lancaster University
University of Michigan
Review of Scientific Instruments
0034-6748 (ISSN) 1089-7623 (eISSN)
Vol. 89 11 113303Subject Categories
Accelerator Physics and Instrumentation
Subatomic Physics
Atom and Molecular Physics and Optics
DOI
10.1063/1.5056248
PubMed
30501337