Coupling cavity damper for the ARES

Naito, F.; Akai, K.; Akasaka, N.; Ezura, E.; Kageyama, T.; Mizuno, Hiroshi; Nakanishi, Hiroshi; Takeuchi, Y.; Yamazaki, Yoichi; Kobayashi, T.

doi:10.1109/pac.1997.753080

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…A water load is connected on the other end of the waveguide with a ceramic window [8] between them. Only a small output power (measured 180W and expected 150W at Vc=0.5MV) flows out through the waveguide with no beam current.…”

Section: Power Output From the C-cavity Dumpermentioning

confidence: 99%

Fundamental mode characteristics of ARES cavity under beam environment

Akasaka¹,

Akai

Ezura

et al.

Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)

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Two types of ARES cavities were tested in the TRISTAN accumulation ring in KEK. In this paper, results relating to the fundamental mode in the accelerating cavity are reported. The status of the cavity, including the detuning frequency under beam loading and the output power from the coupling cavity damper, was measured at different beam current and with various bunch patterns. Its behavior agrees well with the calculation based on a coupled resonator model.

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Section: Power Output From the C-cavity Dumpermentioning

confidence: 99%

Fundamental mode characteristics of ARES cavity under beam environment

Akasaka¹,

Akai

Ezura

et al.

Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)

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“…The accelerating mode is operated in the n/2 mode of the three cells at 508MHz. The 0 and n modes are damped with a "coupling cavity damper [2]" which has a choke filter to block the n/2 mode. For more details of the ARES system, refer to Ref.…”

Section: Introductionmentioning

confidence: 99%

HOM characteristics of the ARES cavity

Kobayashi

Akai²,

Akasaka³

et al.

Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)

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The ARES (Accelerator Resonantly coupled with an Energy Storage) cavity, which consists of three cells, has been developed for the KEK B-Factory, and two types of the ARES cavity have been constructed for the beam test. Both the types were installed in the KEK TRISTAN Accumulation Ring and beam-tested. The accelerating cell of the ARES has a HOM-damped structure to lower the impedance of HOM's in order to store a high current beam. The spectra excited by the beam (single bunch, 100mA) were measured for both the cavities with scanning of the resonant frequency. Basically these results are consistent with those of calculations. The HOM's appear to be damped as expected. But the actual spectra for three cells are more complicated than only the accelerating cell. During this experiment, however, any beam instabilities due to the impedance of the cavities were not observed. This paper describes only the "ARES95"-one of the two types of the ARES. Counter-Balmce Figure 1 : A schematic drawing of the "ARES95."

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