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

Chalmers, Physics, Theoretical Physics

University of Plymouth

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

Rutherford Appleton Laboratory

J. Warwick

Queen's University Belfast

M. Zepf

Queen's University Belfast

Friedrich Schiller University Jena

K. Krushelnick

University of Michigan

A. G. R. Thomas

University of Michigan

Lancaster University

Review of Scientific Instruments

0034-6748 (ISSN)

Vol. 89 11 113303

Subject Categories

Accelerator Physics and Instrumentation

Subatomic Physics

Atom and Molecular Physics and Optics

DOI

10.1063/1.5056248

PubMed

30501337

More information

Latest update

1/7/2019 3