Conceptual Design Study for the Vacuum Pumping Systems for a 500 MeV H‾ cyclotron
department or school: TRIUMF
department or school: Non UBC
data provider: DSpace
alternative: TRIUMF brown reports TRI-69-9
creator: Wright Engineers Limited
creator: Arthur D. Little, Inc.
creator: TRIUMF
issued: 2025-01-29T20:12:12Z
issued: 1969-08
description: This report of the conceptual design study of the vacuum pumping system for the TRIUMF cyclotron considers two different pumping systems in detail: large trapped oil diffusion pumps, and 20°K cryopumps with auxiliary trapped oil diffusion pumps. The pumping systems are compared in relation to certain criteria. These include an equivalent nitrogen stripping cross-section pressure of 7 x 10- 8 Torr within 15 hours of pumping, minimum contamination of the vacuum chamber, and compatibility with other cyclotron components. Reliability, maintenance and test requirements have received particular attention, since cryopumping has not been widely used as a pumping method for an accelerator. The report contains a discussion of outgassing rate data of materials and an analysis of the gas loads for the cyclotron. Gauging and leak-testing methods for the vacuum chamber and pumping system are described. Estimates of capital and annual operating costs for the two pumping systems are provided, and a construction schedule concludes the report.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/90229
note: TRIUMF CONCEPTUAL DESIGN STUDY FOR ' THE VACUUM PUMPING SYSTEM FOR A 500 MEV H- CYCLOTRON Wright Engineers Limited, Vancouver, B.C., Arthur D. Little, Inc. Cambridge, Mass., MESON FACILITY OF: UNIVERSITY OF ALBERTA SIMON FRASER UNIVERSITY UNIVERSITY OF VICTORIA UNIVERSITY OF BRITISH COLUMBIA and TRIUMF TRl-69-9 Prepared by R.G. Blakely TRIUMF CONCEPTUAL DESIGN STUDY OF THE VACUUM PUMPING SYSTEM FOR A 500 MeV H- CYCLOTRON Wright Engineers Limited Vancouver, B.C. TRl-69-9 (Sections 8, 9, 10.2, 10.3, R.W. Moore, Jr. Vivienne J. Harwood Postal Address: TRIUMF University of British Columbia Vancouver 8, B.C. Canada 10.4, 10.5, 12, 13, 14, 15 and 16) Arthur D. Little, Inc. Cambridge, Mass. (Section 10.1) TRIUMF, UBC (Sections 1-7 and 11) August 1969 ABSTRACT This report of the conceptual design study of the vacuum pumping system for the TRIUMF cyclotron considers two different pumping systems in detail: large trapped oil diffusion pumps, and 20°K cryopumps with auxiliary trapped oil diffusion pumps. The pumping systems are compared in relation to certain criteria. These include an equivalent nitrogen stripping cross-section pressure of 7 x 10- 8 Torr within 15 hours of pumping, minimum contamination of the vacuum chamber, and compatibility with other cyclotron components. Reliability, maintenance and test requirements have received particular attention, since cryopumping has not been widely used as a pumping method for an accelerator. The report contains a discussion of outgassing rate data of materials and an analysis of the gas loads for the cyclotron. Gauging and leak-testing methods for the vacuum chamber and pumping system are described. Estimates of capital and annual operating costs for the two pumping systems are provided, and a construction schedule concludes the report. ii C O N T E N T S 1 . INTRODUCTION 2. CRITERIA FOR THE VACUUM PUMPING SYSTEM 2. 1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2. 10 Pumpdown Time Gas Density Requirements Contamination Space Limitations Com…
has type: Report
is shown at: 10.14288/1.0447863
language: eng
peer review status: Unreviewed
provider: Vancouver : University of British Columbia Library
publisher: TRIUMF
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Researcher
type: Text
identifier URI: http://hdl.handle.net/2429/90229