Beam Veri cation of the Large Dynamic Range Readout Design of DAMPE-PSD

ZHOU Yong; YU Yuhong; SUN Zhiyu; ZHANG Yongjie; FANG Fang; CHEN Junling; HU Bitao

doi:10.11804/NuclPhysRev.33.04.461

The Plastic Scintillator Detector (PSD) of DArk Matter Particle Explorer (DAMPE) aims for high energy e/γ identification and charge measurement for cosmic-ray ions from Z=1~20. It adopts photomultiplier tube as the readout device and extracts signals from both dynode5 and dynode8 to enlarge the readout dynamic range. A beam test on a PSD detector unit based this design has been carried out at the External Target Facility (ETF) terminal of the Cooling Storage Ring of Heavy Ion Research Facility in Lanzhou (HIRFL-CSR). The detector response to light nuclei (Z≤8) at the medium energy scale was extracted and the attenuation length was proved to be irrelevant with the impinging nuclei species. By extrapolating the result to heavy nuclei at the high energy scale and taking into account light attenuation, energy fluctuation and imping angle, the dynamic range of the output signal of PSD detector unit was estimated. The range is well within the linear range of the front-end electronics of PSD, thus verifies the large dynamic range readout design of PSD.

Beam Veri cation of the Large Dynamic Range Readout Design of DAMPE-PSD

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;

3. University of Chinese Academy of Sciences, Beijing 100049, China

Funds: Strategic Priority Research Program on Space Science of Chinese Academy of Sciences (XDA04040202-3)

Received Date: 2016-01-26

Rev Recd Date: 2016-02-23

Publish Date: 2016-12-20

Key words:

Abstract: The Plastic Scintillator Detector (PSD) of DArk Matter Particle Explorer (DAMPE) aims for high energy e/γ identification and charge measurement for cosmic-ray ions from Z=1~20. It adopts photomultiplier tube as the readout device and extracts signals from both dynode5 and dynode8 to enlarge the readout dynamic range. A beam test on a PSD detector unit based this design has been carried out at the External Target Facility (ETF) terminal of the Cooling Storage Ring of Heavy Ion Research Facility in Lanzhou (HIRFL-CSR). The detector response to light nuclei (Z≤8) at the medium energy scale was extracted and the attenuation length was proved to be irrelevant with the impinging nuclei species. By extrapolating the result to heavy nuclei at the high energy scale and taking into account light attenuation, energy fluctuation and imping angle, the dynamic range of the output signal of PSD detector unit was estimated. The range is well within the linear range of the front-end electronics of PSD, thus verifies the large dynamic range readout design of PSD.

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Reference (10)

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Beam Veri cation of the Large Dynamic Range Readout Design of DAMPE-PSD

doi: 10.11804/NuclPhysRev.33.04.461

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