Methods to increase linac efficiency
The average gradient of an accelerator section is proportional to the average power entering the section during its filling time. As an example the SLAC the gradient is one and two thirds the peak power. The linear collider requires a gradient of 21MV/m, hence 159 MW of peak power. We do not as yet have 159 MW klystrons, therefore we multiply, by means of pulse compression the peak power we do have, P/sub k/, by a multiplication factor 159/P/sub k/. This note presents methods to increase the compression efficiency so that the 21 MV/m gradient can be reached with a minimum of rf peak power, of rf average power, and of AC line power. It discusses the design of variable group velocity sections and it shows that by changing the group velocity gradient along the section, the variation of voltage with time can be used for beam loading compensation when the beam pulse width is less than the section filling time. 9 references, 15 figures, 2 tables.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 6985954
- Report Number(s):
- SLAC/AP-29; ON: DE84014692
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LINEAR ACCELERATORS
EFFICIENCY
COMPRESSION
ELECTRIC FIELDS
KLYSTRONS
PULSE TECHNIQUES
STANFORD LINEAR COLLIDER
THEORETICAL DATA
ACCELERATOR FACILITIES
ACCELERATORS
DATA
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
INFORMATION
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NUMERICAL DATA
430100* - Particle Accelerators- Design
Development
& Operation
430200 - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics