Mass spectrometer vacuum housing and pumping system

Patent · Sun Dec 31 23:00:00 EST 1995

OSTI ID:870529

Coutts, Gerald W ^[1]; Bushman, John F ^[2]; Alger, Terry W ^[3]

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1. Livermore, CA
2. Oakley, CA
3. Tracy, CA

A vacuum housing and pumping system for a portable gas chromatograph/mass spectrometer (GC/MS). The vacuum housing section of the system has minimum weight for portability while designed and constructed to utilize metal gasket sealed stainless steel to be compatible with high vacuum operation. The vacuum pumping section of the system consists of a sorption (getter) pump to remove atmospheric leakage and outgassing contaminants as well as the gas chromatograph carrier gas (hydrogen) and an ion pump to remove the argon from atmospheric leaks. The overall GC/MS system has broad application to contaminants, hazardous materials, illegal drugs, pollution monitoring, etc., as well as for use by chemical weapon treaty verification teams, due to the light weight and portability thereof.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5539204
• OSTI ID: 870529
• Country of Publication: United States
• Language: English

Related Subjects

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application
argon
atmospheric
broad
broad application
carrier
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chemical
chromatograph
compatible
consists
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drugs
due
etc
gas
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gasket
gc
getter
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housing
hydrogen
illegal
leakage
leaks
light
light weight
mass
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materials
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metal gas
metal gasket
minimum
monitoring
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outgassing
overall
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portability
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pump
pumping
pumping section
remove
sealed
section
sorption
spectrometer
stainless
stainless steel
steel
teams
treaty
utilize
vacuum
vacuum housing
vacuum pump
vacuum pumping
verification
weapon
weight