Accelerating cavity development for the Cornell B-factory, CESR-B

Barnes, P.; Chen, Chen X.; Hartung, W.; Hiller, Maria; Kirchgessner, J.; Moffat, D.; Ringrose, R. C.; Rubin, D.; Samed, Y.; Saraniti, D.; Sears, J.; Shu, Q.S.; Tigner, M.

doi:10.1109/pac.1991.164441

Cited by 27 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To examine the stress distribution on the cavity structure, we adopt effective stress defined as (1) According to its definition, is invariably positive. Shown in Fig.…”

Section: Stress Distributionmentioning

confidence: 99%

“…The CESR-type SRF cavity [1] has been adopted as an accelerating cavity in Cornell Electron Storage Ring (CESR), Taiwan Light Source (TLS), Canadian Light Source (CLS), Shanghai Synchrotron Radiation Facility (SSRF), and Diamond Light Source (DLS). The KEK-type SRF cavity [2] has been operated in the High-energy Accelerator Research Organization (KEKB) and Beijing Electron Position Collider II (BECPII).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Material Properties on the Elastoplastic Buckling of an SRF Cavity Under External Pressure

Lin

Wang

Furuya

et al. 2011

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

An SRF cavity is generally manufactured with a shell structure to decrease the temperature of the inner surface and consequently to decrease the rf surface resistance. During operation, the SRF cavity is immersed in a bath of liquid helium while its interior is maintained under ultra-high vacuum. To be loaded under a condition of external pressure at a cryogenic temperature, a pressure test at room temperature is requested for safety examination. Explicit calculation and estimation of buckling to prove its structural strength is thus essential. With a great stress on the cavity, the nonlinear behavior of the stress-strain curve of niobium generates the elastoplastic buckling behavior different from elastic buckling. The stress-strain curve of niobium depends on the formation, fabrication, and treatment, thus modifying the buckling behavior. We investigated the buckling behavior of a 500-MHz SRF cavity under external pressure, for which various stress-strain curves were applied. Finite-element software (ANSYS) was used to calculate the limit pressure and post-buckling behavior, with an incremental arc-length control scheme to include effects of nonlinearities of both the geometry and the material property. Not only the limit pressure but also the buckling mode vary with the assigned material property and boundary conditions.

show abstract

“…To examine the stress distribution on the cavity structure, we adopt effective stress defined as (1) According to its definition, is invariably positive. Shown in Fig.…”

Section: Stress Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Material Properties on the Elastoplastic Buckling of an SRF Cavity Under External Pressure

Lin

Wang

Furuya

et al. 2011

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

show abstract

“…The first approximation simplifies the geometry of a single cavity as currently installed in the Cornell Electron Storage Ring, CESR. The 3D model of the 500 MHz CESR-B [6] assembly is shown in Fig. 4.…”

Section: Cesr-b Rf Cavity Assemblymentioning

confidence: 99%

Preliminary impedance budget for NSLS-II storage ring

Blednykh

Krinsky

2007

2007 IEEE Particle Accelerator Conference (PAC)

View full text Add to dashboard Cite

show abstract

“…For this project that began in 1999, TLS is the first synchrotron facility in which installation of an accelerating SRF module in the storage ring has been attempted. An SRF module of CESR type [2], developed in the Newman Laboratory of Nuclear Studies, Cornell University, USA, was chosen for this project. Two SRF modules were contracted to ACCEL as the first time to build a CESR-type SRF module by an industrial company.…”

Section: Introductionmentioning

confidence: 99%

Elastoplastic Buckling on the Bent Waveguide of CESR-Type SRF Cavity

Lin

Wang

Yang

et al. 2007

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

A superconducting radio-frequency (SRF) cavity module of CESR-type has been adopted for some advanced accelerators. During operation, the pressure in the liquid-helium vessel acts on the cavity wall, but an ultrahigh vacuum must prevail inside the cavity; the cavity structure must be thus pressure-tested at ambient temperature as a standard procedure for safety. During the pressure test elastoplastic buckling might occur on this SRF cavity and its bent waveguide section, being a shell-like structure. A nonlinear finite-element model for computation is established to assess the mechanism of buckling and post-buckling of the bent waveguide. Some test results with copper bent waveguides are presented. The critical pressure and buckling pattern are strongly affected by the material property and the thickness of the structure and the U-channel.

show abstract

Accelerating cavity development for the Cornell B-factory, CESR-B

Cited by 27 publications

References 1 publication

Effects of Material Properties on the Elastoplastic Buckling of an SRF Cavity Under External Pressure

Effects of Material Properties on the Elastoplastic Buckling of an SRF Cavity Under External Pressure

Preliminary impedance budget for NSLS-II storage ring

Elastoplastic Buckling on the Bent Waveguide of CESR-Type SRF Cavity

Contact Info

Product

Resources

About