Lattice Study for the Taiwan Photon Source

Kuo, Chun‐Yan; Chang, H. P.; Luo, G.H.; Tsai, Hung-Jen; Wang, M.H.; Chen, C.T.

doi:10.1109/pac.2005.1591338

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…The TPS is a 3-GeV synchrotron radiation facility that has been in operation since 2016. It is comprised of a 150 MeV S-band linac, a linac to booster transfer line (LTB), a booster synchrotron, booster to storage ring transfer line (BTS), and a storage ring with a circumference of 518.4 m [1]. The TPS, a synchrotron machine with low emittance and ultra-high photon brightness, necessitates a stable beam orbit for optimal performance.…”

Section: Introductionmentioning

confidence: 99%

TPS Fast Orbit Feedback Upgrade

Chiu,

Huang,

et al. 2024

J. Phys.: Conf. Ser.

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The orbit feedback system for the Taiwan Photon Source (TPS) was delivered in 2014. With the installation of an increasing number of insertion devices, a variety of wide-band disturbances are produced. In 2019, a proposal was put forth to enhance the stability of the orbit through the implementation of the fast orbit feedback (FOFB) system upgrade. The upgrade plan encompasses the revision of the power supply controller and an increase in the feedback computation rate from 10 kHz to 30 kHz. Following the upgrade, the bandwidth of the TPS fast orbit feedback system has been expanded from 250 Hz to 400 Hz in the vertical plane and from 200 Hz to 250 Hz in the horizontal plane. The integrated power spectrum density of the orbit could be reduced by approximately 20% with effective measures.

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Section: Introductionmentioning

confidence: 99%

TPS Fast Orbit Feedback Upgrade

Chiu,

Huang,

et al. 2024

J. Phys.: Conf. Ser.

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“…The Taiwan Photon Source (TPS) is a low emittance, third-generation light source at the NSRRC generating high brilliance X-ray photon beams for beam-line users [1]. The circumference of the storage ring is 518.4 m with 24 double-bend achromat cells.…”

Section: Introductionmentioning

confidence: 99%

Investigation and elimination of orbit distortion sources to achieve a high-quality photon beam at the Taiwan Photon Source

Huang¹,

Chiu²,

Hu³

et al. 2019

J. Inst.

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High beam stability is important to obtain a brilliant photon beam. There are many sources which can negatively affect beam stability, such as mechanical vibrations, electrical noise and malfunction of power supplies, etc. These sources are hard to avoid completely by careful design and may appear any time after installation work. To identify possible sources and study their effect to beam motion, a systematic study was performed starting with specific hardware installations. A method was developed to quickly identify locations of multiple perturbations and to observe vibrations and low-level undesired alternating magnetic fields. As for mechanical vibrations, a severe beam motion during beam commissioning was caused by quadrupole and vacuum chamber vibrations. The transfer of such vibrations to the beam were simulated by forced-shaking. Inversion of the response matrix together with singular value decomposition could identify perturbations by electrical noise originating from a nearby radio frequency system and cooling fans. After eliminating these detrimental factors, a high-quality beam, stable to less than 10% of the beam size, was achieved at the Taiwan Photon Source.

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“…The Taiwan Photon Source (TPS) is a low-emittance 3 GeV electron storage ring with 24 doublebend achromat cells [1]. The design beam current is 500 mA and presently the operational beam current is 400 mA with seven insertion devices.…”

Section: Introductionmentioning

confidence: 99%

“…The design beam current is 500 mA and presently the operational beam current is 400 mA with seven insertion devices. The lattice parameters are shown in table 1. In order to monitor and correct the beam orbit, in each cell seven beam position monitors (BPMs), seven slow and four fast horizontal/vertical correctors are installed.…”

Section: Introductionmentioning

confidence: 99%