Author: Bucher, P.
Paper Title Page
History and Future of the Machine Protection System for the High Intensity Proton Accelerator (HIPA) at Paul Scherrer Institute (PSI)  
  • P. Bucher
    PSI, Villigen, Villigen, Switzerland
  Even after more than 40 years of continued operation, the control system for the HIPA is still being further improved and developed. This also applies to the Run Permit System (RPS) which is a part of the control system. The challenge we are faced is to upgrade the system in technology, structure and reliability while the system components need to remain compatible with each other. The previous generation of the RPS were CAMAC (EUR 4100 e) based crates and were holding the in-house developed hardware which connects the alarm signals to the system. PSI introduced VME (VITA 1.1-1997) as the new control system standard. Hence, new RPS Industry Packs for VME Carrier Boards had to be developed. During the VME upgrade, the structure of the RPS remained the same. The focus was put on increasing the reliability and flexibility of the system. Today, after the upgrade, the system is running stable. Continued efforts are necessary to lower costs and become more independent from products which are not further developed by the manufacturers. With a more compact design in mind, it will increase the I/O usage per slot, which will lead to reduced cabling, less hardware and ultimately fewer errors.  
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