Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1988-02-08
1991-01-29
Lee, Benny T.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
3133601, 328233, H05H 904
Patent
active
049889192
ABSTRACT:
A compact, small diameter, standing-wave linear accelerator structure suitable for industrial and medical applications is disclosed. The novel structure utilizes a new type of coupling cavity for Pi/2 mode, standing-wave operation. The coupling cavity fits into the webs between the accelerating cavities substantially within the diameter of the acclerating cavities. This is made possible by keeping the center section of the cavity thin to concentrate the electric field vector at the center of a section of the cavity and by enlarging the ends of a section of the coupling cavity to accommodate the magnetic field vector. This structure offers a significant reduction in overall diameter over the side-coupled, annular ring, and existing coaxial coupled structures, while maintaining a high shunt impedance and large nearest neighbor coupling (high group velocity). A prototype 4 MeV, 36 cm long, S-band accelerator incorporating the new structure has been built and tested.
REFERENCES:
patent: 3953758 (1976-04-01), Tran
patent: 4155027 (1979-05-01), Schriber et al.
Knapp, 1970, "High Energy Structures", in Accelerators, La Postolle et al. (Eds) Wiley, pp. 601-616.
Dome, 1970, "Review and Survey of Accelerating Structures", in Accelerators, LaPostolle et al. (Eds), Wiley, pp. 637-659.
Taylor, 1970, "Radiofrequency Problems", in Accelerators, LaPostolle et al. (Eds), Wiley, pp. 905-909.
Hoffswell et al., 1983, "Higher Modes in the Coupling Cells of Coaxial and Annular-Ring Coupled Linac Structures", IEEE Transactions on Nuclear Science, NS-30, No. 4, pp. 3588-3589.
Knapp et al., 1968, "Standing Wave High Energy Linear Accelerator Structures", Review of Scientific Instruments, 39, #7, pp. 979-991.
Tran, 1977, "A Low-Cost RF-Structure for Electron and Proton Linac", in IEEE Transactions on Nuclear Science, NS-24, #3, pp. 1774-1775.
Hahn et al., 1968, "Perturbation Measurement of Transverse R/Q in Iris-Loaded Waveguides", in IEEE Transactions on Microwave Theory and Techniques, MTT-16, #1, pp. 20-29.
IEEE Trans. on Nuclear Science, vol. NS-30, No. 4, Aug., 1983, "Heat Transfer, Thermal Stress Analysis and The Dynamic Behaviour of High Power RF Structures", J. McKeown and J. P. Labrie.
Proc. of 1984 Linear Accelerator Conf. pp. 177-179, "Coaxial-Coupled Linac Structure for Low Gradient Applications", Laszewski & Hoffswell.
Nuclear Instruments and Methods in Physics Research 227 (1984), 196-204, North-Holland, Amsterdam "Caracteristiques de Dispersion et Impedances Shunt de Trois Structures Biperiodiques Acceleratrices en Bande S", Celso Fuhrmann.
"Effective Shunt Impedance Comparison Between S-Band Standing Wave Accelerators with On-Axis and Off-Axis Couplers", Schriber, Funk and Hutcheon, Atomic Energy of Canada, Ltd., Physics Div., Chalk River Nuclear Labs, Chalk River, Ontario, Canada K0J 1J0.
"The Coaxial Coupled Linac Structure", Labrie and McKeown, Accelerator Physics Branch Research Co., Chalk River Laboratories, Chalk River, Ontario, KOJIJO, Canada.
Bayer Matthew
Tanabe Eiji
Trail Mark E.
Cole Stanley Z.
Lee Benny T.
Novack Sheri M.
Sgarbossa Peter J.
Varian Associates Inc.
LandOfFree
Small-diameter standing-wave linear accelerator structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Small-diameter standing-wave linear accelerator structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Small-diameter standing-wave linear accelerator structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-816109