The detailed machine operation sequence is shown in Figure 2, in accordance to Sirius' energy ramp scheme.īooster ramping power supplies start ramp waveform at E-gun is triggered at beam is injected into Booster at beam is extracted from Booster at and beam is injected into Storage Ring at. The closer to 50 ps RMS the modulators jitter are, the better.
We believe the amplitude modulation (or ripple) in the high voltage pulses are responsible for that. The experience from the high voltage modulators of the existing LNLS Linac showed us that equipment are also quite sensitive to jitter. *Note: This is defined as the jitter of the E-gun trigger relative to the RF clock. Repetition rate of E-gun and pulsed magnets The hardware performance and the interface between timing modules and other hardware modules must satisfy the Sirius requirements.įurthermore, the timing system needs to perform the Sirius machine operation sequence and arbitrary bucket injection. The system is event-based (see Figure 1), transmitting time-multiplexed event codes, i.e., an event distribution system that broadcasts the timing information to all the relevant devices in the accelerator's complex. The Sirius timing system will be responsible for providing low jitter synchronized signals for the beam injection process as well as reference clocks and triggers for diverse subsystems such as electron BPMs, fast orbit feedback and beamlines.
