Subjects: Physics >> Nuclear Physics Subjects: Nuclear Science and Technology >> Nuclear Detection Technology and Nuclear Electronics submitted time 2024-02-27
LUFenhua
TANG Shuwen
FU Shengwei
YAN Duo
MA Peng
YANG Haibo
YU Yuhong
ZHANG Xueheng
WANG Shitao
ZHANG Yongjie
FANG Fang
LIU Tuoqi
XU Yingfeng
LI Zhiyao
LIU Xiangman
WEI Xiaobao
SUN Zhiyu
Abstract： The high-intensity heavy-ion accelerator facility (HIAF) under construction is equipped with an advanced radioactive beam line HFRS, which will provide a new opportunity for the research of high-energy radionuclide beam physics in China.The characteristic of HFRS is high intensity, This puts forward very strict requirements for particle recognition energy loss detector.The traditional energy loss detector generally adopts the analog plug-in technology route of preamplifier, main amplifier and ADC for signal processing.This scheme has some problems, such as slow electronic response, poor flexibility and difficulty in dealing with serious pulse pile-up at high count rate. We propose a new applicable to high count rate energy loss detector scheme.The signal of the energy loss detector is initially amplified by the fast charge sensitive preamplifier, and Then the waveform is directly collected by waveform digitizer and then processed by digital algorithm.And use the Multiple Sampling Ionization Chamber (MUSIC) of secondary beam line of lanzhou RIBLL2 for the radioactive source and beam test.Using the 3 components 𝛼 source test, using digital shaping algorithm processing for acquisition of waveform, energy resolution (FWHM) of up to 1.31%.In RIBLL2 provide 300 MeV/u of 56Fe beam test, uses the time constant of 𝜏f = 2 𝜇𝑠 of fast charge sensitive preamplifier on the count rate is close to 1 MHz is still not occurred pulse pile-up obviously.
Subjects: Nuclear Science and Technology >> Nuclear Detection Technology and Nuclear Electronics Subjects: Physics >> Nuclear Physics submitted time 2024-02-26
LIUTuoQi
TANGShuWen
SUN Yu
YU Yuhong
FANG Fang
WANG Shitao
ZHANG Xueheng
SUN Zhiyu
LU Fenhua
FU Shengwei
Li Zhiyao
WEI Xiaobao
XU Yingfeng
Abstract： Cosmic rays are used for the calibration of the Veto detector at ETF in HIRFL-CSR of the Cooling Storage
Ring of Heavy Ion Research Facility in Lanzhou(HIRFL-CSR). The work is divided into two parts: position calibration
and time calibration. The hit positions of particles are obtained by position calibration and an uniform standard of the
measurement of particle hit time in the Veto detector is built through time calibration. The information of position and
time of particles serves as important criteria for eliminating changed particle events that hit the neutron wall detector,
providing support for the realization of the physical objectives of the neutron wall detector. A 2.53 cm position resolution
and a 1.09 ns time resolution have been achieved in this paper.
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