CKOV Gas System

MIPP

• C02 usage during March/April
• Cerenkov gas system (i.e., this system)
• Beam Cerenkov gas system (using C4F10 also)
• all gas systems

Other

• BTeV bladder design (plans for their RICH testbeam)
• Northacker design (CO2 blanket)
• E910 gas system (no bladder)
• E690 gas system (no bladder)

Weather plots for O'Hare

Gas comparison spreadsheet (html) (xls) (Do not edit these files, originals are on D. Wright's computer)

Pressure calculations

New gas: C4F10 (Perfluorobutane = R610 = PFG-5040 ) MSDS

• Cost
• n = n0 + a/lambda + b/(lambda^2) = n0 + c*E + d*(E^2), where (from Tomasz Skwarnicki (Syracuse,BTeV)
  • n = refractive index
  • n0 = 1.00131788309
  • a = 0.00021380499
  • b = 8.449289479
  • c = 0.00000017244563
  • d = 0.00000549653379
• Used by Hermes/JLab/HeraB/LHCb/BTeV.
• Manufacturers:
  • 3M quote, delivery time few weeks? Keith E. Brobst (see quote for contact info).
  • American Specialty Gases. Ralph Mullins 1-419-729-7732.
  • Advanced Specialty Gases. Prescot Stone 1-415-398-7167.

Original gas: C2 Cl2 F4 (Freon 114) MSDS

• Banned because it is ozone depleting
• Hartouni stockpile not at LLNL, possibly at Fermilab, but not found

MSDS Directory

Information Archive