High current cavity design at BNL

Xu, Wencan; Ben‐Zvi, I.; Calaga, R.; Hahn, H.; Johnson, E.; Kewisch, J.

doi:10.1016/j.nima.2010.06.245

Cited by 15 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One way of resolving these confines lies in reducing the Q of all dangerous HOMs by developing complex HOMdamping schemes, and in addition, circumscribing the number of cells per linac module so as to avoid trapping high-Q HOMs [26][27][28]. These stringent requirements on HOM suppression frequently complicate the SRF linac designs, reduce the real-estate gradient, and make them more expensive.…”

Section: Introductionmentioning

confidence: 99%

Chromaticity of the lattice and beam stability in energy recovery linacs

Litvinenko

2012

Phys. Rev. ST Accel. Beams

View full text Add to dashboard Cite

Energy recovery linacs (ERLs) are an emerging generation of accelerators that promises to revolutionize the fields of high-energy physics and photon sciences. These accelerators combine the advantages of linear accelerators with that of storage rings, and augur the delivery of electron beams of unprecedented power and quality. The use of superconducting radio-frequency cavities converts ERLs into nearly perfect ''perpetuum mobile'' accelerators, wherein the beam is accelerated to the desired energy, used, and then yields the energy back to the rf field. However, one potential weakness of these devices is transverse beam breakup instability that could severely limit the available beam current. In this paper, I propose a novel method of suppressing these dangerous effects via a natural phenomenon in the accelerators, viz., the chromaticity of the transverse motion.

show abstract

Section: Introductionmentioning

confidence: 99%

Chromaticity of the lattice and beam stability in energy recovery linacs

Litvinenko

2012

Phys. Rev. ST Accel. Beams

View full text Add to dashboard Cite

show abstract

“…Otherwise the power dissipated in the cavity walls would become unacceptably high. A 704 MHz superconducting cavity has been developed at BNL for high-current applications [90,91,92]. The cavity, named BNL3, is shown in Figure 3-4.…”

Section: Energy Recovery Linacs and High Current Srf Cavitiesmentioning

confidence: 99%

eRHIC Design Study: An Electron-Ion Collider at BNL

Aschenauer¹,

Baker²,

Bazilevsky³

et al. 2014

Preprint

Self Cite

View full text Add to dashboard Cite

“…New ERL cavities were designed with the goal of minimum HOMs [12,13]. The optimization process for one new cavity, BNL3, resulted in increasing the R=Q of the fundamental mode from 400 to 500 per cavity while remaining under an acceptable magnetic field level of B peak =E acc 4:26 mT=ðMV=mÞ.…”

Section: A Erl Cavity Design Improvementsmentioning

confidence: 99%

Higher-order-mode absorbers for energy recovery linac cryomodules at Brookhaven National Laboratory

Hahn

Ben‐Zvi

Calaga

et al. 2010

Phys. Rev. ST Accel. Beams

Self Cite

View full text Add to dashboard Cite

Several future accelerator projects at Brookhaven for the Relativistic Heavy Ion Collider (RHIC) are based on energy recovery linacs (ERLs) with high-charge high-current electron beams. Their stable operation mandates effective higher-order-mode (HOM) damping. The development of HOM dampers for these projects is pursued actively at this laboratory. Strong HOM damping was experimentally demonstrated both at room and at superconducting (SC) temperatures in a prototype research and development (R&D) five-cell niobium superconducting rf (SRF) cavity with ferrite dampers. Two room-temperature mock-up five-cell copper cavities were used to study various damper configurations with emphasis on capacitive antenna dampers. An innovative type of ferrite damper over a ceramic break for an R&D SRF electron gun also was developed. For future SRF linacs longer cryomodules comprised of multiple superconducting cavities with reasonably short intercavity transitions are planned. In such a configuration, the dampers, located closer to the cavities, will be at cryogenic temperatures; this will impose additional constraints and complications. This paper presents the results of simulations and measurements of several damper configurations.

show abstract

High current cavity design at BNL

Cited by 15 publications

References 3 publications

Chromaticity of the lattice and beam stability in energy recovery linacs

Chromaticity of the lattice and beam stability in energy recovery linacs

eRHIC Design Study: An Electron-Ion Collider at BNL

Higher-order-mode absorbers for energy recovery linac cryomodules at Brookhaven National Laboratory

Contact Info

Product

Resources

About