First operational experience with the positive-ion injector of ATLAS

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6996947

Bollinger, L M; Pardo, R C; Shepard, K W; Billquist, P J; Bogaty, J M; Clifft, B E; Harkewicz, R; Joh, K; Markovich, P K; Munson, F H; Zinkann, G; Nolen, J A

A Positive-Ion Injector (PH) designed to enable ATLAS to accelerate all stable nuclei has been completed and successfully tested. This new injector system consists of an ECR source on a 350-kV platform coupled to a 12-MV superconducting injector linac formed with four different types of independently-phased 4-gap accelerating structures. The injector linac is configured to be optimum for the acceleration of uranium ions from 0.029 to {approximately} 1.1 MeV/u. When ions with q/A > 0. 1 are accelerated by PII and injected into the main ATLAS linac, CW beams with energies over 6 MeV/u can be delivered to the experimental areas. Since its completion in March 1992, PII has been tested by accelerating {sup 3O}Si{sup 7+}, {sup 40}Ar{sup ll+}, {sup 132}Xe{sup 13+}, and {sup 208}Pb{sup 24+}. For all of these, transmission through the injecter linac was {approximately} 100% of the pre-bunched beam, which corresponds to {approximately} 60% of the DC beam from the source. The accelerating fields of the superconducting resonators were somewhat greater than the design goals, and the whole system ran stably for long periods of time.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6996947
• Report Number(s): ANL/CP-76982; CONF-920708--3; ON: DE92040728
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430302* -- Particle Accelerators-- Injection & Extraction Systems
ACCELERATORS
ATLAS SUPERCONDUCTING LINAC
BEAM INJECTION
BEAMS
CAVITY RESONATORS
DESIGN
ELECTRONIC EQUIPMENT
EQUIPMENT
HEAVY ION ACCELERATORS
ION BEAMS
LINEAR ACCELERATORS
RESONATORS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
TESTING