Title :
Interlock and protection system for 1 MW Klystron RF system of LEHIPA
Author :
Rosily, Sherry ; Pande, Mayank ; Singh, Prashant
Author_Institution :
Ion Accel. Dev. Div., Bhabha Atomic Res. Centre, Mumbai, India
Abstract :
This paper discusses details of an `Interlock and Protection System for 1 MW Klystron Radio Frequency (RF) System of LEHIPA´ which includes control, interlock and protection of high power DC supplies and other auxiliary systems connected to a 1 MW Klystron RF System. This system is exposed to high Radio Frequency Interference from the high power amplifier and other connected systems. Therefore it needs to be well isolated at all interfaces. Also, fast response of the order of very few microseconds is necessary for the protection of such a high power system. Fault tolerance and self diagnostic features are other key requirements of this application. The system needs to handle around 70 signals with mostly non-standard signal formats including frequency modulated optical signals. It also needs to simultaneously perform complex floating point calculations with critical timing requirements. Flexibility to accommodate few additional signals or slight variation in interlock algorithm is also another important requirement of this system as the application itself is still under development. These are not achievable using typical process control systems. Hence, tailor-made solutions for signal transmission, control hardware and software have been designed to meet these challenges. EMI/EMC qualification tests relevant to this application are also discussed.
Keywords :
electromagnetic compatibility; klystrons; proton accelerators; radiofrequency interference; radiofrequency power amplifiers; signal processing equipment; EMI/EMC qualification test; LEHIPA; fault tolerance; floating point calculation; frequency modulated optical signal; high power DC supply; high power amplifier; interlock algorithm; klystron RF system; klystron radio frequency system; low energy high intensity proton accelerator; power 1 MW; process control system; protection system; radio frequency interference; self diagnostic; Anodes; Cathodes; Klystrons; Optical switches; Radio frequency; Software; Controller; Interlock; Klystron; Protection;
Conference_Titel :
Control Communication and Computing (ICCC), 2013 International Conference on
Conference_Location :
Thiruvananthapuram
Print_ISBN :
978-1-4799-0573-7
DOI :
10.1109/ICCC.2013.6731627