Fast drift gases - CH 4 and CF 4
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Fast drift gases - CH 4 and CF 4 10 cm /ms 12 cm /ms 40 cm drift => ~ 3-4 ms Requires high drift field CF 4 -Ar CH 4 C 2 H 4 (1 KV/cm) (1 V/cm/Torr)
description
Fast drift gases - CH 4 and CF 4. 40 cm drift => ~ 3-4 m s Requires high drift field. 10 cm / m s. 12 cm / m s. CH 4. C 2 H 4. CF 4 -Ar. (1 V/cm/Torr). (1 KV/cm). Fast Drift Gases - C 2 H 2 +CF 4 +Ar. MiniTPC Simulation N. Smirnoff (STAR). Single track - PowerPoint PPT Presentation
Transcript of Fast drift gases - CH 4 and CF 4
Fast drift gases - CH4 and CF4
10 cm /ms
12 cm /ms
40 cm drift => ~ 3-4 ms Requires high drift field
CF4 -Ar
CH4
C2 H4
(1 KV/cm) (1 V/cm/Torr)
Fast Drift Gases - C2H2+CF4+Ar
MiniTPC SimulationN. Smirnoff (STAR)
• Single track• 35 pad rows (1.5 x 0.3 cm2)• Minimum number of hits 9• Reconstructed momentum• dE/dx smeared with 25% energy resolution• Dip angle correction• Truncated mean
e/p separation with CH4
0.25-0.4 0.4 - 1.0
1.0 - 1.2 1.2 - 2.5
• Single track• 35 pad rows (1.5 x 0.3 cm2)• Minimum number of hits 9• Reconstructed momentum• dE/dx smeared with 25% energy resolution• Dip angle correction• Truncated mean
MiniTPC SimulationN. Smirnoff (STAR)
e/p separation with C2H2+Ar
0.25-0.4 0.4 - 1.0
1.0 - 1.2 1.2 - 2.5
![High-resolution spectroscopy and analysis of the ν3/2ν4 …gases among the longest-lived atmospheric trace gases. CF 4 has an estimated lifetime of more than 50,000 years [1,2] and,](https://static.fdocuments.in/doc/165x107/60db54abbb84795ab9586c66/high-resolution-spectroscopy-and-analysis-of-the-324-gases-among-the-longest-lived.jpg)
