Calibration of micro-channel plate detector in a Thomson spectrometer for protons and carbon ions with energies below 1 MeV

Author:

Varmazyar Parvin1ORCID,Singh Prashant K.1ORCID,Elekes Zoltan2ORCID,Halasz Zoltan2ORCID,Nagy Bence1ORCID,Son Joon-Gon1ORCID,Csontos Janos3ORCID,Mohacsi Arpad13ORCID,Nelissen Kwinten3ORCID,Somoskői Tamas3ORCID,Szabo Rita E.3ORCID,Toth Szabolcs3ORCID,Ter-Avetisyan Sargis1ORCID,Osvay Karoly14ORCID

Affiliation:

1. National Laser-Initiated Transmutation Laboratory, University of Szeged, 6720 Szeged, Hungary

2. Institute for Nuclear Research, 4026 Debrecen, Hungary

3. ELI-ALPS Research Institute, ELI-HU Non-Profit Ltd., 6728 Szeged, Hungary

4. Department of Optics and Quantum Electronics, University of Szeged, 6720 Szeged, Hungary

Abstract

The calibration of an ion detection system was carried out for protons and carbon ions from a few tens of keV up to about 1 MeV energies. A Thomson spectrometer deflecting the particle beam accelerated from a laser plasma creates the ion spectra on a phosphor screen behind a micro-channel plate (MCP), which are recorded by a camera. During calibration, the ion spectra simultaneously hit the slotted CR-39 track detector installed in front of the MCP and, passing through the adjacent CR-39 stripes, the MCP. The calibration provides the ratio of the interpolated values between two consecutive stripes of the camera signal and the total number of particles recorded on the corresponding stripe of CR-39. The efficiency of proton detection by CR-39 was also measured in a conventional accelerator beam and found to drop by 20% below 100 keV.

Funder

Ministry of Technology and Innovation, Hungary

National Research, Development and Innovation Office, Hungary

Economic Development and Innovation Program of Hungary

Publisher

AIP Publishing

Subject

Instrumentation

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