Journal
JOURNAL OF INSTRUMENTATION
Volume 18, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1748-0221/18/04/T04004
Keywords
Beam-line instrumentation (beam position and profile monitors; beam-intensity monitors, bunch length monitors); Accelerator Subsystems and Technologies
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A beam position monitor (BPM) has been developed and tested to monitor the stability of high intensity proton beams. The BPM prototype consists of four pick-up electrodes and uses Libera SparkT for signal processing. Calibration and further testing were conducted using a moving wire method and during beam commissioning of the cyclotron. The prototype system successfully produced well-defined signals for beam positions and currents, with a resolution of 0.1mm and beam intensity up to 600 mu A. The BPM monitoring will be integrated into the safety PLC after further ISOL operations.
A beam position monitor (BPM) is built and tested to monitor the stability of high intensity proton beams accelerated by a 70 MeV cyclotron for ISOL operation in the aspects of beam position and current. The prototype BPM has four pick-up electrodes with a length of 19 cm and uses Libera SparkT to process signals. It was firstly tested using a moving wire method to calibrate beam positions and further tested when installed in the beam line together with a beam profile monitor during beam commissioning of the cyclotron. The prototype system produced well-defined signals for two transverse directions with a resolution of 0.1mm and for beam intensity up to 600 mu A. A beam-stop signal can be issued by the readout program for the Spark when beam instabilities evaluated by the program reach certain limits set for each operation. The non-destructive BPM monitoring of high-current beams will be integrated into the safety PLC after a series of ISOL operation are carried out.
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