Upgrade of low level RF system based on Micro Telecom Computing Architecture (MTCA) for HLS-II LINAC

Ren Tianqi; Tang Leilei; Zhou Zeran

doi:10.11884/HPLPB202032.200080

Volume 32 Issue 8

Aug. 2020

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Article Navigation > High Power Laser and Particle Beams > 2020 > 32(8): 084006

Ren Tianqi, Tang Leilei, Zhou Zeran. Upgrade of low level RF system based on Micro Telecom Computing Architecture (MTCA) for HLS-II LINAC[J]. High Power Laser and Particle Beams, 2020, 32: 084006. doi: 10.11884/HPLPB202032.200080

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Ren Tianqi, Tang Leilei, Zhou Zeran. Upgrade of low level RF system based on Micro Telecom Computing Architecture (MTCA) for HLS-II LINAC[J]. High Power Laser and Particle Beams, 2020, 32: 084006. doi: 10.11884/HPLPB202032.200080

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Upgrade of low level RF system based on Micro Telecom Computing Architecture (MTCA) for HLS-II LINAC

doi: 10.11884/HPLPB202032.200080

National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China

Received Date: 2020-03-27
Rev Recd Date: 2020-06-05
Publish Date: 2020-08-13

Abstract

Abstract

The performance of Hefei Light Source II (HLS-II) has improved a lot after major maintenance and reconstruction. To further provide continuous and stable light, the RF system of the HLS-II LINAC needs to be upgraded for top-off mode. It is required that the RF power source have long-time stability and reliability, but the old analog low level RF system(LLRF) can’t meet the requirement. Hence a digital low level RF control system based on Micro Telecom Computing Architecture(MTCA) is designed and implemented to control the amplitude and phase of the RF power source. This system is composed of digital board cards based on FPGA, RF board cards, MTCA chassis and a frequency synthesis system. It works at 2856 MHz of S band, with phase and amplitude stability up to 0.2° and 0.04% respectively, which meets the top-off mode requirement of 0.25° RMS phase jitter of the digital low-level RF system in the HLS-II LINAC.
- HLS-II,
- LINAC,
- low level RF system,
- FPGA,
- MTCA

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References(10)

References

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