Study of the White circuit tracking performance in the booster synchrotron of SRRC

Chen, C.S.; Chen, J.; Kuo, Chunghui; Wang, C.J.; Hsu, K.T.; Lin, K.K.

doi:10.1109/pac.2001.988339

Cited by 3 publications

(2 citation statements)

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“…The upgrade replace the booster original BITBUS based control environment with a VME crates based control environment. The booster dipole and two family quadrupole configured as three White circuits driven by resonance excitation, and their control was also convert into VME system [1][2][3]. VME based timing generator and dedicated timing link were deployed.…”

Section: Introductionmentioning

confidence: 99%

New Injection Controls Environment for the Taiwan Light Source

Chen,

Liao,

et al. 2024

J. Phys.: Conf. Ser.

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Taiwan Light Source (TLS) has been service for user service since 1993. Several legacy systems have recently been updated in order to remove obsolescent parts and provide higher operating efficiency. Proprietary designed timing modules were recently replaced by an event based timing system. The magnets of the booster synchrotron were configured as three White circuits and driven by resonance excitation. The original control of the White circuits, which included an analogue amplitude loop and digital phase loop for regulation, has been replaced by full digital regulation loops. The successful upgrade of both systems has led to easy and smooth injection control with enhanced functionality and flexibility. The injection control includes foreground and background processes that coordinate the operation of e-gun, linear accelerator, booster synchrotron, and storage ring with the help of timing system. The injection control GUI provides an intuitive operation interface that includes parameter setting and all necessary information displays, such as various timing value, stored beam current/lifetime, injection efficiency, filling pattern, kickers waveform and so on. Energy saving mode of White circuits operation are supported and embedded into injection control to save electricity. Lifetime calculation of the storage ring is also synchronized with the injection process. Implementation details and operation experience will be presented.

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Section: Introductionmentioning

confidence: 99%

New Injection Controls Environment for the Taiwan Light Source

Chen,

Liao,

et al. 2024

J. Phys.: Conf. Ser.

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“…A special topology known as a 'White circuit', applied in many booster rings all over the world [1][2][3][4][5][6][7] is described in this paper; its basic configuration is shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the White Circuit System of the NSRRC TLS Booster

Liu¹,

Hsieh²,

Liu³

et al. 2013

AMR

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At the Taiwan Light Source (TLS), the booster ring provides energy injection at repetition frequency 10 Hz with injection capability in the top-up mode. To obtain the wide acceleration energy range 50 -- 1.5 GeV, a 'White-circuit' topology has been chosen. The White circuit is, briefly, a biased resonant circuit in which the energy is transferred between the booster bending magnets and a large capacitor bank. The White circuit uses a resonance axiom to ramp the current of the bending magnets. The peak current is 2300 A; the bending magnets can accelerate the energy of the booster electron beam current from 50 MeV to 1.5 GeV with the White circuit system. We analyze the characteristic of the White circuit to get a circuit model. Using the circuit model to simulate impedance and phase are identical with the measurement data of the White circuit. The results are described in this paper.

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