New corrector system for the Fermilab Booster

Prebys, E.; Drennan, C.; Harding, David J.; Kashikhin, V.S.; Lackey, J.; Makarov, Alexander; Pellico, W.

doi:10.1109/pac.2007.4440247

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…The corrector parameters are shown in Table VI. The magnet design and the fabrication technology are similar to that of the existing Fermilab Booster correctors [9], [10] which are in operation now. The number of poles is reduced from 12 to 6, which is enough for the combined dipole and sextupole correctors.…”

Section: Rcs Magnetsmentioning

confidence: 99%

A Cost-Effective Rapid-Cycling Synchrotron

Nagaitsev

Lebedev

2019

Rev. Accl. Sci. Tech.

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The present Fermilab proton Booster is an early example of a rapid-cycling synchrotron (RCS). Built in 1960s, it features a design in which the combined-function dipole magnets serve as vacuum chambers. Such a design is quite cost-effective, and it does not have the limitations associated with the eddy currents in a metallic vacuum chamber. However, an important drawback of that design is a high impedance, as seen by a beam, because of the magnet laminations. More recent RCS designs (e.g. J-PARC) employ large and complex ceramic vacuum chambers in order to mitigate the eddy-current effects and to shield the beam from the magnet laminations. Such a design, albeit very successful, is quite costly because it requires large-bore magnets and large-bore RF cavities. In this paper, we consider an RCS concept with a thin-wall metallic vacuum chamber as a compromise between the chamber-less Fermilab Booster design and the large-bore design with ceramic chambers.

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Section: Rcs Magnetsmentioning

confidence: 99%

A Cost-Effective Rapid-Cycling Synchrotron

Nagaitsev

Lebedev

2019

Rev. Accl. Sci. Tech.

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“…In this report, we will discuss the background and significance of the TPS, explore the motivation behind this research, present the methodology employed, discuss the design and implementation of the TCMPS, and evaluate its performance through experimental results. The study aims to advance power supply technology in synchrotron light sources and provide valuable insights for future developments [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a temperature-compensated corrector magnet power supply for the Taiwan Photon Source

Wang

Liu

et al. 2023

J. Inst.

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The Taiwan Photon Source (TPS) is a widely recognised 3 GeV synchrotron light source. It has demonstrated exceptional performance in average beam downtime and meeting international standards over its successful ten-year operation. Regular equipment updates are conducted for all subsystems to ensure continuous improvement and maintain an optimal research facility environment. This study focuses on designing and implementing a temperature-compensated corrector magnet power supply for the TPS. The power supply incorporates a high-bandwidth, compact, cost-effective, bipolar, and highly precise shunt resistor as the current feedback component. A temperature control copper box and temperature compensation circuit are employed to improve the thermal equilibrium time of the output current. A laboratory-developed TPS-corrected magnet power supply with temperature compensation control has been successfully developed through these measures. The prototype exhibits a maximum output current of 10 A and operates at a voltage of 40 V. Metal-oxide-semiconductor field-effect transistors (MOSFETs) are utilised as the power switch in a full-bridge (H-bridge) configuration with a driving frequency of 40 kHz. The output current ripple is effectively maintained at 100 μA for a 10 A output, and the stabilisation time is achieved within 5 minutes. The control loop design of the prototype has been verified to achieve fast and stable output current performance. The completed prototype demonstrated a -3 dB bandwidth of 2.57 kHz when tested with an input reference signal of 0.1 V. Finally, a hardware prototype circuit was constructed in the power supply laboratory, featuring an input voltage of 48 V, an output current of 10 A, and a maximum power capacity of 400 W.

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“…This report will discuss the digital design, circuit architecture, and protection circuit of FDCMPS and evaluate its performance through experimental results. The study aims to advance power supply technology for synchrotron accelerator light sources and provide valuable insights for future developments [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Development of DSP-based TPS fully digital correction magnet power supply

2023

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The Taiwan Photon Source (TPS) is a third-generation 3 GeV synchrotron accelerator light source. After successfully operating for ten years since its first light in 2013, various subsystems are undergoing updates. In the context of magnet power supply upgrades, the trend toward digitization and high-precision modulation control is driving advancements worldwide. This study focuses on developing a fully digital correction magnet power supply (FDCMPS) based on a digital signal processor (DSP). The prototype utilizes a low-power, floating-point DSP with multiple communication functionalities as the core control unit. The output current is converted into digital values using current sensors and high-precision analog-to-digital converters. Discrete PI compensator algorithms are implemented within the DSP to generate pulse-width modulation (PWM) waveforms, driving a full-bridge (H-bridge) converter configuration with metal-oxide-semiconductor field-effect transistors (MOSFET). This forms a complete, fully digital closed-loop current control system. A virtual control interface is designed to operate the FDCMPS state. The control loop design of the prototype has been validated and demonstrates stable output bipolar current performance. When tested with a 0.1 V input reference signal, the prototype achieves a -3 dB bandwidth of 2.03 kHz. Finally, a hardware prototype circuit was constructed in the power supply laboratory, with an input voltage of 48 V, an output current of 10 A, and a maximum power of 400 W. Overall, the developed fully digital correction magnet power supply prototype showcases stable and high-performance output bipolar current performance. The system achieves total harmonic distortion of output current ripple within 0.3 mA peak to peak and long-term stability within ± 15 ppm. The successful implementation of the prototype establishes a solid foundation for advancing magnet power supply technology at the TPS.

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New corrector system for the Fermilab Booster

Cited by 8 publications

References 3 publications

A Cost-Effective Rapid-Cycling Synchrotron

A Cost-Effective Rapid-Cycling Synchrotron

Design and implementation of a temperature-compensated corrector magnet power supply for the Taiwan Photon Source

Development of DSP-based TPS fully digital correction magnet power supply

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