Journals of Accelerator Conferences Website (JACoW)

'Journal of Accelerator Conferences Website' (JACoW) is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.

Title	Development and Test Operation of the Prototype of the New Beam Interlock System for Machine Protection of the RIKEN RI Beam Factory
Authors	M. Komiyama, M. Fujimaki, N. Fukunishi, A. Uchiyama RIKEN Nishina Center, Wako, Japan M. Hamanaka, K. Kaneko, R. Koyama, M. Nishimura, H. Yamauchi SHI Accelerator Service Ltd., Tokyo, Japan A. Kamoshida National Instruments Japan Corporation, MInato-ku, Tokyo, Japan
Abstract	We have been op­er­at­ing the beam in­ter­lock sys­tem (BIS) for ma­chine pro­tec­tion of the RIKEN RI Beam Fac­tory (RIBF) since 2006. It stops beams ap­prox­i­mately 15 ms after re­ceiv­ing an alert sig­nal from the ac­cel­er­a­tor and beam line com­po­nents. We con­tinue to op­er­ate BIS suc­cess­fully; how­ever, we are cur­rently de­vel­op­ing a suc­ces­sor sys­tem to stop a beam within 1 ms con­sid­er­ing that the beam in­ten­sity of RIBF will con­tinue to in­crease in the fu­ture. After com­par­ing mul­ti­ple sys­tems, Com­pactRIO, a prod­uct by Na­tional In­stru­ments, was se­lected for the suc­ces­sor sys­tem. In­ter­lock logic for sig­nal input/out­put is im­ple­mented on the field-pro­gram­ma­ble gate array (FPGA) be­cause fast pro­cess­ing speed is re­quired. On the other hand, sig­nal con­di­tion set­ting and mon­i­tor­ing do not re­quire the same speed as in­ter­lock logic. They are im­ple­mented on the RT-OS and con­trolled by using ex­per­i­men­tal physics and in­dus­trial con­trol sys­tem (EPICS) by set­ting up an EPICS server on the RT-OS. As a first step in de­vel­op­ment, a pro­to­type con­sist­ing of two sta­tions that han­dle only dig­i­tal alert sig­nals was de­vel­oped and in­stalled in part of the RIBF in the sum­mer of 2022 (224 input con­tacts). The sig­nal re­sponse time of the pro­to­type, mea­sured with an os­cil­lo­scope, av­er­aged 0.52 ms with both sta­tions (the dis­tance be­tween two sta­tions is ap­prox­i­mately 75 m). Fur­ther­more, by ad­di­tion­ally in­stalling a pull-up cir­cuit at each sig­nal input con­tact of the sys­tem, the sys­tem re­sponse time was suc­cess­fully re­duced to ap­prox­i­mately 0.13 ms.
Paper	download TUPDP050.PDF [0.669 MB / 5 pages]
Poster	download TUPDP050_POSTER.PDF [0.811 MB]
Cite	download ※ BibTeX ※ LaTeX ※ Text/Word ※ RIS ※ EndNote
Conference	ICALEPCS2023
Series	International Conference on Accelerator and Large Experimental Physics Control Systems (19th)
Location	Cape Town, South Africa
Date	09-13 October 2023
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Volker RW Schaa (GSI, Darmstadt, Germany); Andy Götz (ESRF, Grenoble, France); Johan Venter (SARAO, Cape Town, South Africa); Karen White (SNS, Oak Ridge, TN, USA); Marie Robichon (ESRF, Grenoble, France); Vivienne Rowland (SARAO, Cape Town, South Africa)
Online ISBN	978-3-95450-238-7
Online ISSN	2226-0358
Received	03 October 2023
Revised	09 October 2023
Accepted	14 December 2023
Issued/td>	18 December 2023
DOI	doi:10.18429/JACoW-ICALEPCS2023-TUPDP050
Pages	645-649
Copyright	Pub­lished by JACoW Pub­lish­ing under the terms of the Cre­ative Com­mons At­tri­bu­tion 4.0 In­ter­na­tional li­cense. Any fur­ther dis­tri­b­u­tion of this work must main­tain at­tri­bu­tion to the au­thor(s), the pub­lished ar­ti­cle's title, pub­lisher, and DOI.