400 MeV upgrade for the Fermilab linac

Conference · Fri Mar 24 04:00:00 EST 1989

OSTI ID:6234088

MacLachlan, J A

Fermilab has plans for a comprehensive accelerator upgrade to open new possibilities for both the fixed target and collider experimental programs. An early step in this program is to increase the energy of the linac from 200 to 400 MeV by replacing the last four of its nine 201 MHz Alvarez tanks with twenty-eight 805 MHz side-coupled cavity chains operating at about 8 MV/m average axial field. The principal purpose is to reduce the incoherent spacecharge tuneshift at injection into the Booster which currently limits both the brightness of the beam, an important determinant of collider luminosity, and total intensity to produce both the antiprotons for the collider and the beams to fixed target experimental areas. Other consequences of higher Booster injection energy expected to contribute to some degree of higher intensity limits and improved operational characteristics include improved quality of the guide field at injection, reduced frequency swing for the rf systems, and smaller emittance for the injected beam. The linac upgrade project has moved from a 1986 study through a development project including structure models and numerical studies to a full-feature module prototyping starting this year.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (USA)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 6234088
• Report Number(s): FNAL/C-89/81; CONF-890335-92; ON: DE89011456
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATORS
BEAM EMITTANCE
BEAM INJECTION
BEAM LUMINOSITY
CYCLIC ACCELERATORS
DESIGN
FERMILAB ACCELERATOR
FOCUSING
MODIFICATIONS
RF SYSTEMS
SPACE CHARGE
SYNCHROTRONS