Speaker
Description
We have developed new magnet power supply (PS) system for the forthcoming green light source facility, SPring-8-II. Aiming at highly reliable and energy conscious accelerator operations, various PSs with a variety of output current and voltage settings are designed such that (i) each PS with an output current larger than 250 A includes Silicon Carbide switching devices, achieving a conversion efficiency larger than 93% (ii) all PS are embedded with a full digital control system that enables a versatile individual parameter setting, and (iii) main PSs are connected in series to multipole magnets for suppressing PS failures as low as possible. For an individual current setting for the correction of betatron beatings and other purposes, we will prepare auxiliary PSs to add to each individual magnet where it is required. Bipolar PSs for steering magnets have been designed to provide stable output over the whole current range by optimizing our pulse width modulation control. Additionally, we have proposed a new option to adjust an individual current setting by implementing shunt resistors, and also a fast PS switcher that can quickly replace a failed PS with a backup PS without a beam loss is being prepared. We will present these new PS designs and the results of our demonstrations.
Funding Agency
This work was supported by RIKEN SPring-8 Center (RSC)
| Paper status | Proceeding files received |
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