The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Luo, Y. AU - Bilbrough, D.G. AU - Dickerson, C. AU - Germain, A.E. AU - Hendricks, M.R. AU - Peters, C.E. AU - Sharamentov, S.I. ED - Schaa, Volker RW ED - Jansson, Andreas ED - Shea, Thomas ED - Olander, Johan TI - PLC Based Flexible and Scalable Vacuum Control at the Argonne Tandem Linear Accelerator System (ATLAS) J2 - Proc. of IBIC2019, Malmö, Sweden, 08-12 September 2019 CY - Malmö, Sweden T2 - International Beam Instrumentation Conferenc T3 - 8 LA - english AB - The beamline sections of an accelerator and different ion sources require a vacuum system capable of providing pressures down to 10⁻¹⁰ Torr. To control, monitor, and provide interlock protection of the vacuum equipment, a PLC-based vacuum control system was developed and tested at the Argonne Tandem Linear Accelerator (ATLAS). This system was designed to be highly flexible and scalable to meet the variety of equipment and configurations at ATLAS. The current FGPA-based system is reliable and fast, but is very difficult to maintain and upgrade. Particular attention was paid to the signal distribution to promote standard cable connections, minimize the usage of terminal blocks, and reduce the time to troubleshoot problematic channels. The system monitors the status of fast acting relays for interlock or control purposes, and utilizes RS-485 communication to gather lower priority information such as pump speeds or vacuum pressure readouts. The vacuum levels are monitored to interlock the high voltages of some beam instruments to protect against sparks as the Paschen minimum is approached. This paper mainly presents work on hardware interface to various vacuum devices. PB - JACoW Publishing CP - Geneva, Switzerland SP - 285 EP - 287 KW - vacuum KW - controls KW - PLC KW - ECR KW - status DA - 2019/11 PY - 2019 SN - 2673-5350 SN - 978-3-95450-204-2 DO - doi:10.18429/JACoW-IBIC2019-TUPP005 UR - http://jacow.org/ibic2019/papers/tupp005.pdf ER -