Performance of vacuum components operating at 1 x 10/sup -11/ Torr

Journal Article · Thu Mar 01 04:00:00 EST 1979 · J. Vac. Sci. Technol.; (United States)

DOI:https://doi.org/10.1116/1.570066· OSTI ID:6212419

Halama, H J

The Intersecting Storage Accelerator (ISABELLE) consists of two rings having a circumference of 3.8 km each. The vacuum system uses an 8.8-cm circular chamber maintained at 1 x 10/sup -11/ Torr by a combination of Ti sublimation and 30-l sec/sup -1/ ion pumps placed at 5-m intervals. Several experimental setups which simulate sections of ISABELLE have been constructed to study the behavior of stainless steel, aluminum, H/sub 2/--Ti system, and ion pumps at low pressures (< or =1 x 10/sup -11/ Torr). In this paper we will summarize the results of our measurements on (1) total outgassing of 304 stainless and 6061 aluminum, (2) hydrogen pumping speed, ultimate pressure, and sorbing capacity of titanium films as a function of surface coverage, H/sub 2/ input flux and surface preparation, (3) hydrogen, methane, helium, and argon pumping speeds of ion pumps as a function of pressure, and (4) reemission of gases from ion pumps.

• Research Organization: Brookhaven National Laboratory Upton, New York 11973
• OSTI ID: 6212419
• Journal Information: J. Vac. Sci. Technol.; (United States), Journal Name: J. Vac. Sci. Technol.; (United States) Vol. 16:2; ISSN JVSTA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities &amp; Equipment
430400* -- Particle Accelerators-- Storage Rings
ALKANES
ALLOYS
ALUMINIUM ALLOYS
ARGON
BEAMS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COLLIDING BEAMS
CORROSION RESISTANT ALLOYS
CRYOGENIC FLUIDS
DEGASSING
DIAGNOSTIC TECHNIQUES
ELEMENTS
EVAPORATION
FLUIDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HELIUM
HYDROCARBONS
HYDROGEN
IRON ALLOYS
IRON BASE ALLOYS
ISABELLE STORAGE RINGS
LABORATORY EQUIPMENT
MATERIALS
METALS
METHANE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
ORGANIC COMPOUNDS
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
PUMPING
PUMPS
RARE GASES
SORPTIVE PROPERTIES
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
STORAGE RINGS
SUBLIMATION
SURFACE PROPERTIES
TESTING
TITANIUM
TRANSITION ELEMENTS
ULTRAHIGH VACUUM
VACUUM PUMPS
VACUUM SYSTEMS