A 166.6 MHz superconducting rf system for the HEPS storage ring

Zhang, Peng; Hao, Xuerui; Huang, Ting-lei; Li, Z; Lin, Hailun; Meng, F.; Mi, Zhiyong; Sun, Yongshuai; Wang, G; Wang, Q; Zhang, X

doi:10.1088/1742-6596/874/1/012091

Cited by 15 publications

(2 citation statements)

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“…A redesign of the rf conditioning system for power couplers has recently been proposed for the High Energy Photon Source (HEPS) project currently under active construction [10,11]. The system shall have a function-driven modular design, fast interlock, customizable automated controller, data acquisition, data archiving, data analysis, and automatic report generation.…”

Section: Jinst 16 P07027mentioning

confidence: 99%

Development of an automatic control and analysis system for the conditioning of high-power couplers at IHEP

Deng¹,

Zhang²,

Huang³

et al. 2021

J. Inst.

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A new radio frequency (rf) conditioning system for power couplers has been developed for the High Energy Photon Source (HEPS) project. The system adopted a function-driven modular design, and the control software development was based on Experimental Physics and Industrial Control System (EPICS) platform to be compatible with the HEPS control system. Dedicated data acquisition system and in-house developed interlock system, as well as universal instruments and devices, constitute the main hardware infrastructure, while distributed EPICS input/output controllers, tailor-made operator interfaces, and data archiving comprise the control software pillars. Automatic control logics were developed to adjust the conditioning parameters according to vacuum pressure readings, thus largely spares human misoperations and considerably reduces the operator’s workload. Limited human supervision is required and the conditioning efficiency may be improved. Besides, data analysis and automatic report generation programs were developed and integrated into the conditioning system. Performances and behaviors of the couplers being conditioned can be easily obtained to help identify potential issues. The system has been used in the conditioning of power couplers and has also been customized to accommodate high-power tests of several other rf components thanks to its modular nature. The performance of both the hardware and the control software was excellent during the tests. The design, realization, and operation of the new rf conditioning system are presented.

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Section: Jinst 16 P07027mentioning

confidence: 99%

Development of an automatic control and analysis system for the conditioning of high-power couplers at IHEP

Deng¹,

Zhang²,

Huang³

et al. 2021

J. Inst.

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“…High Energy Photon Source (HEPS) is a 6-GeV diffraction-limited synchrotron light source currently under construction in Beĳing [15]. Solid-state technologies have been adopted for the RF power sources [16]. Five 166.6-MHz 260-kW SSAs will drive the fundamental superconducting cavities, while two 499.8-MHz 260-kW SSAs for the third harmonic cavities in the storage ring.…”

Section: Introductionmentioning

confidence: 99%

Design and performance tests of a modular 166.6-MHz 50-kW compact solid-state power amplifier for the HEPS-TF project

Luo¹,

Zhang²,

Lin³

et al. 2021

J. Inst.

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A 166.6-MHz 50-kW power transmitter is required to drive the dressed superconducting radio-frequency (RF) cavity during horizontal tests and to condition the fundamental power couplers as well as higher-order-mode ferrite absorbers. A highly modular yet compact amplifier adopting solid-state technologies was therefore developed in the framework of High Energy Photon Source - Test Facility. All power amplifier and power supply modules are pluggable from the front panel of the amplifier system. A 3-stage power combining topology was realized by using 32 power amplifier modules, 4 eight-way stripline power combiners, 2 two-way 35-kW coaxial power combiners, and 1 two-way 65-kW coaxial power combiner. Each power amplifier module is equipped with individual circulator and load utilizing an optimized cooling circuit design to ensure the entire amplifier system to be operational in both full-transmission and full-reflection scenarios. No final-stage high-power circulator or load is needed. The amplifier system is tunable in pulsed mode for any duty factors and fully functional in the continuous-wave mode as required. Excellent noise suppression and high wall-plug-to-RF efficiency were achieved at nominal power. Comfortable redundancies for both power amplifier and power supply modules were reserved to compensate for any hardware degradations during operations. Temperature, current, voltage, and RF signal of each module as well as cooling were monitored and managed by using EPICS in the control system of the amplifier. An interlock system was also integrated as well as an event logging system for post-mortem analysis. The system has accumulated over 2000 hours of operation. The design and performance tests of the first 166.6-MHz 50-kW modular solid-state power amplifier are presented.

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2023

Superconducting Radiofrequency Technology for Accelerators

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A 166.6 MHz superconducting rf system for the HEPS storage ring

Cited by 15 publications

References 0 publications

Development of an automatic control and analysis system for the conditioning of high-power couplers at IHEP

Development of an automatic control and analysis system for the conditioning of high-power couplers at IHEP

Design and performance tests of a modular 166.6-MHz 50-kW compact solid-state power amplifier for the HEPS-TF project

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