The verification of the large dynamic range readout design for the charge detector of the very large area <i>γ</i>-rays space telescope

As a successor to the DArk Matter Particle Explorer (DAMPE), the Very Large Area γ-rays Space Telescope (VLAST) is being designed to strengthen γ-ray observations and extend the cosmic ray nuclei measurements up to Zr (Z = 40) and even heavier ions. Consequently, a large dynamic range is required by the charge detector of VLAST to cover the measurements of cosmic ray particles from the proton to ultra-heavy ions. To achieve the requirements, a readout design based on the three dynodes signal extracted from the photomultiplier tube has been proposed. In addition, a prototype VLAST charge detector has been developed and tested with cosmic rays, pulse UV laser, and relativistic heavy ion beams to verify this design. The test results illustrate that the dynamic range readout design can easily cover the required dynamic range of about five orders of magnitude.

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Publication Details

Journal
Review of Scientific Instruments
Published
2025-02-01
DOI
https://doi.org/10.1063/5.0238224
Citations
2
Primary Topic
Astrophysics and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
3.74

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The verification of the large dynamic range readout design for the charge detector of the very large area γ-rays space telescope

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The verification of the large dynamic range readout design for the charge detector of the very large area γ-rays space telescope

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article en
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Abstract

As a successor to the DArk Matter Particle Explorer (DAMPE), the Very Large Area γ-rays Space Telescope (VLAST) is being designed to strengthen γ-ray observations and extend the cosmic ray nuclei measurements up to Zr (Z = 40) and even heavier ions. Consequently, a large dynamic range is required by the charge detector of VLAST to cover the measurements of cosmic ray particles from the proton to ultra-heavy ions. To achieve the requirements, a readout design based on the three dynodes signal extracted from the photomultiplier tube has been proposed. In addition, a prototype VLAST charge detector has been developed and tested with cosmic rays, pulse UV laser, and relativistic heavy ion beams to verify this design. The test results illustrate that the dynamic range readout design can easily cover the required dynamic range of about five orders of magnitude.

Review of Scientific InstrumentsVol. 96(2)
University of Science and Technology of China (CN), Chinese Academy of Sciences (CN), Purple Mountain Observatory (CN), Institute of Modern Physics (CN), University of Chinese Academy of Sciences (CN), Lanzhou University (CN)
National Natural Science Foundation of China, National Key Research and Development Program of China
Affordable and clean energy
Openalex Percentile: Top 9%
Astrophysics and Cosmic Phenomena
3.74
DOISourceOpenAlex
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