Control and diagnostic systems for the LNLS 500-MeV booster synchrotron

Abstract

This paper describes the control and diagnostic systems for the new LNLS 500-MeV booster synchrotron. The LNLS Light Source is operated with a home made local controller system (LOCO), using Z80-based CPU modules that run a general software to handle the interface boards. Although the overall structure of the low-level software was unaltered for the LNLS booster synchrotron, time constraints required many tasks previously executed by the highlevel software to be transferred to local CPU modules. These modules now make decisions at critical moments in the injection process and the low-level software handles orbit measurement during the energy ramp. A new network board was designed to improve the reliability and speed of the communication between the low-and high-level software.

Upgrade of the LNLS Synchrotron Light Source timing system

“…For this process two types of trigger pulses were necessary: with and without pre trigger pulse 1 . The injection system with the new 500-MeV booster synchrotron demanded not only the addition of more hardware to trigger the new pulsed devices, but also the implementation of new protocols for interaction with the control system [1]. Finally, new timing signals, in particular the coincidence signal that connects the revolution frequency of the storage ring to the revolution frequency of the booster synchrotron were added.…”