Variable energy standing wave linear accelerator structure

Patent · Tue Aug 25 00:00:00 EDT 1981

OSTI ID:6120031

Tanabe, E; Vaguine, V A

Variable energy selection is accomplished in a side cavity coupled standing wave linear accelerator by shifting the phase of the field in a selected side coupling cavity by pi radians where such side coupling cavity is disposed intermediate groups of accelerating cavities. For an average acceleration energy of e1 (Mev) per interaction cavity, and a total number of N interaction cavities, the total energy gain is e1 (N-2n1) where n1 is the number of interaction cavities traversed beyond the incidence of the phase shift. The phase shift is most simply accomplished by changing the selected side cavity configuration mechanically in repeatable manner so that its resonant excitation is switched from tm010 mode to either tm011 or tem modes. Thus, the total energy gain can be varied without changing the rf input power. In addition, the beam energy spread is unaffected.

• Assignee: Varian Associates Inc
• Patent Number(s): US 4286192
• Application Number: TRN: 81-018415
• OSTI ID: 6120031
• Resource Relation: Patent File Date: Filed date 12 Oct 1979; Other Information: PAT-APPL-084284
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
LINEAR ACCELERATORS
ENERGY RANGE
PHASE SHIFT
BEAMS
CAVITY RESONATORS
COUPLING
OPERATION
RF SYSTEMS
STANDING WAVES
VARIABLE ENERGY CYCLOTRONS
ACCELERATORS
CYCLIC ACCELERATORS
CYCLOTRONS
ELECTRONIC EQUIPMENT
EQUIPMENT
RESONATORS
430100* - Particle Accelerators- Design
Development
& Operation