The absolute calibration of a microchannel plate (MCP) assembly using a Thomson spectrometer for laser-driven ion beams is described. In order to obtain the response of the whole detection system to the particles’ impact, a slotted solid state nuclear track detector (CR-39) was installed in front of the MCP to record the ions simultaneously on both detectors. The response of the MCP (counts/particles) was measured for 5–58 MeV carbon ions and for protons in the energy range 2–17.3 MeV. The response of the MCP detector is non-trivial when the stopping range of particles becomes larger than the thickness of the detector. Protons with energies E ≳ 10 MeV are energetic enough that they can pass through the MCP detector. Quantitative analysis of the pits formed in CR-39 and the signal generated in the MCP allowed to determine the MCP response to particles in this energy range. Moreover, a theoretical model allows to predict the response of MCP at even higher proton energies. This suggests that in this regime the MCP response is a slowly decreasing function of energy, consistently with the decrease of the deposited energy. These calibration data will enable particle spectra to be obtained in absolute terms over a broad energy range.
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August 2016
Research Article|
August 02 2016
Experimental evaluation of the response of micro-channel plate detector to ions with 10s of MeV energies
Tae Won Jeong;
Tae Won Jeong
1Center for Relativistic Laser Science,
Institute of Basic Science (IBS)
, Gwangju 61005, South Korea
2Department of Physics and Photon Science,
Gwangju Institute of Science and Technology (GIST)
, Gwangju 61005, South Korea
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P. K. Singh;
P. K. Singh
1Center for Relativistic Laser Science,
Institute of Basic Science (IBS)
, Gwangju 61005, South Korea
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C. Scullion
;
C. Scullion
3School of Mathematics and Physics,
The Queen’s University of Belfast
, Belfast BT7 1NN, United Kingdom
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H. Ahmed;
H. Ahmed
3School of Mathematics and Physics,
The Queen’s University of Belfast
, Belfast BT7 1NN, United Kingdom
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K. F. Kakolee;
K. F. Kakolee
1Center for Relativistic Laser Science,
Institute of Basic Science (IBS)
, Gwangju 61005, South Korea
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P. Hadjisolomou;
P. Hadjisolomou
3School of Mathematics and Physics,
The Queen’s University of Belfast
, Belfast BT7 1NN, United Kingdom
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A. Alejo;
A. Alejo
3School of Mathematics and Physics,
The Queen’s University of Belfast
, Belfast BT7 1NN, United Kingdom
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S. Kar;
S. Kar
3School of Mathematics and Physics,
The Queen’s University of Belfast
, Belfast BT7 1NN, United Kingdom
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M. Borghesi;
M. Borghesi
3School of Mathematics and Physics,
The Queen’s University of Belfast
, Belfast BT7 1NN, United Kingdom
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S. Ter-Avetisyan
S. Ter-Avetisyan
1Center for Relativistic Laser Science,
Institute of Basic Science (IBS)
, Gwangju 61005, South Korea
2Department of Physics and Photon Science,
Gwangju Institute of Science and Technology (GIST)
, Gwangju 61005, South Korea
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Rev. Sci. Instrum. 87, 083301 (2016)
Article history
Received:
March 24 2016
Accepted:
July 08 2016
Citation
Tae Won Jeong, P. K. Singh, C. Scullion, H. Ahmed, K. F. Kakolee, P. Hadjisolomou, A. Alejo, S. Kar, M. Borghesi, S. Ter-Avetisyan; Experimental evaluation of the response of micro-channel plate detector to ions with 10s of MeV energies. Rev. Sci. Instrum. 1 August 2016; 87 (8): 083301. https://doi.org/10.1063/1.4959187
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