C4F10
C
4F
10, Perfluoro-n-butane, is one of the two Cherenkov radiators to be used in the RICH1 detector at the LHCb experiment. Its refractive index n = 1.0014 in gas form makes it suitable for charged particles identification in the intermediate momentum range 10-60
GeV/c.
IUPAC name |
1,1,1,2,2,3,3,4,4,4-decafluorobutane |
alternate names |
butane, decafluoro-; decafluorobutane; perfluorobutane; sonazoid |
refractive index n @ λ=400nm |
1.0014 |
O. Ullaland, Fluid systems for RICH detectors , Nucl. Instrum. Meth. A 553 (2005) 107 |
n parametrization @ 0°C and 101325 Pa |
(n-1) ⨉ 106=0.25324/(73.7-2-(λ/nm)-2) |
O. Ullaland, Fluid systems for RICH detectors , Nucl. Instrum. Meth. A 553 (2005) 107 |
radiator length |
95 cm |
LHCb collaboration, The LHCb Detector at the LHC , Journal of Instrumentation, Vol. 3, No. 08. (2008), pp. S08005-S08005 |
photon yield for β~1 charged particles |
~ 30 |
LHCb collaboration, The LHCb Detector at the LHC , Journal of Instrumentation, Vol. 3, No. 08. (2008), pp. S08005-S08005 |
momentum range |
10-60 GeV/c |
gas price (2000) |
930 CHF / m3 |
M. Bosteels et al., LHCb RICH gas system proposal , LHCb-2000-079 |
melting point (1 bara) |
-128.2 °C |
M. Bosteels et al., LHCb RICH gas system proposal , LHCb-2000-079 |
boiling point (1 bara) |
-1.9 °C |
M. Bosteels et al., LHCb RICH gas system proposal , LHCb-2000-079 |
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DvD - 06 Apr 2007