Dependence of average path length betatron motion in a storage ring

Shoji, Y.

doi:10.1103/physrevstab.8.094001

Cited by 17 publications

(12 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The betatron oscillation also changes the averaged path length for a revolution [3,4]. Then, after a single deflection, the particle would start synchrotron oscillation.…”

Section: B Path-length Shift and Energy Displacementmentioning

confidence: 99%

Amplitude dependent shift of betatron oscillation center

Shoji

Takao

Nakamura

2014

Phys. Rev. ST Accel. Beams

Self Cite

View full text Add to dashboard Cite

We have analytically calculated and measured the amplitude-dependent shift of the betatron oscillation center at the electron storage ring, NewSUBARU. The shift is due to nonzero average horizontal deflections at the normal sextupole magnets. The shifted center forms a displaced closed orbit and is measured by a closed orbit distortion measurement system, although no single electron runs on this orbit. The measured shifts by betatron oscillations agreed with the theoretical calculation except the variation of data points, which did not obey the ring symmetry. Additional measurements, whose results included the effect of the circumference shift, experimentally proved the amplitude dependent circumference shift for the first time. We also discuss some applications of the shift, which has never been previously analyzed.

show abstract

“…The betatron oscillation also changes the averaged path length for a revolution [3,4]. Then, after a single deflection, the particle would start synchrotron oscillation.…”

Section: B Path-length Shift and Energy Displacementmentioning

confidence: 99%

Amplitude dependent shift of betatron oscillation center

Shoji

Takao

Nakamura

2014

Phys. Rev. ST Accel. Beams

Self Cite

View full text Add to dashboard Cite

show abstract

“…To avoid additional amplitude dependent orbit lengthening effects, the transverse chromaticity has to be set to small values [27][28][29]. Alpha is considered as a function of only and expanded into a power series, using the notation [30,31] …”

Section: A the Low-opticsmentioning

confidence: 99%

Metrology Light Source: The first electron storage ring optimized for generating coherent THz radiation

Feikes

Hartrott

Ries

et al. 2011

Phys. Rev. ST Accel. Beams

View full text Add to dashboard Cite

The Metrology Light Source is a recently constructed 630 MeV electron storage ring, operating as a synchrotron radiation source for the THz to extreme UV spectral range. It is the first storage ring optimized for generating intense, broadband, coherent THz radiation, based on a bunch shortening mode. Stable (''steady state'') or bursting THz radiation up to an average power of about 60 mW can be obtained. The applied machine operation mode is achieved by manipulating the momentum compaction factor by a novel tuning scheme. The underlying low-scheme is of general interest for operating a storage ring in a short bunch mode and is the main subject of this paper.

show abstract

“…In the electron ring experiments, an extension of a comparison of electron and positron magnetic moments [15,16], adjustment of the sextupole fields yielded an IPP lifetime of about 0.8 s. It has been argued that the simultaneous appearance of zero chromaticity and long IPP lifetime should occur in general [17]. Shoji has explained the connection between increased pathlength and chromaticity [18]. At Q x ∼ Q y ∼ 3.6, the nearest spin resonances are too far away to matter [19].…”

mentioning

confidence: 99%