Beam transport experiment with a new kicker control system on the HIRFL-CSR

TL;DR

This paper reports on a new kicker control system for beam transport at HIRFL-CSR, which improves timing precision and beam transport efficiency through advanced ARM+DSP+FPGA technology, enabling successful fast extraction and injection experiments.

Contribution

The paper introduces a novel kicker control system based on ARM+DSP+FPGA technology with high precision timing, enhancing beam transport efficiency at HIRFL-CSR.

Findings

No missed or inefficient kicks observed.

Beam transport efficiency improved.

Successful completion of fast extraction and injection experiments.

Abstract

The kicker control system was 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 was upgraded. The new controller was designed based on ARM+DSP+FPGA technology and monolithic circuit architecture, which can achieve a precision time delay of 2.5 ns. In September 2014, 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 signals' 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-CSR.