Beam transport experiment with a new kicker control system on the HIRFL |
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Authors: | Yan-Yu Wang De-Tai Zhou Jin-Fu Luo Jian-Chuan Zhang Wen-Xiong Zhou Fa-Fu Ni Jun Yin Jia Yin You-Jin Yuan Jing-Bin Shang-Guan |
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Institution: | 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China3. University of the Chinese Academy of Sciences, Beijing 100049, China4. College of Power Engineering, Chongqing University, Chongqing 400044, China |
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Abstract: | A kicker control system is used for beam extraction and injection between two cooling storage rings(CSRs) at the Heavy Ion Research Facility in Lanzhou(HIRFL). To meet the requirements of special physics experiments, the kicker controller has been upgraded, with a new controller designed based on ARM+DSP+FPGA technology and monolithic circuit architecture, which can achieve a precision time delay of 2.5 ns. In September2014, the new kicker control system was installed in the kicker field, and the test experiment using the system was completed. In addition, a pre-trigger signal was provided by the controller, which was designed to synchronize the beam diagnostic system and physics experiments. Experimental results indicate that the phenomena of "missed kick"and "inefficient kick" were not observed, and the multichannel trigger signal delay could be adjusted individually for kick power supplies in digitization; thus, the beam transport efficiency was improved compared with that of the original system. The fast extraction and injection experiment was successfully completed based on the new kicker control systems for HIRFL. |
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Keywords: | CSR beam bunch kicker trigger delay time |
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