Difference between revisions of "CDC straight straws"

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Estimate of t0 is 850.09 and tmax is 1464.19, difference is 614.10
 
Estimate of t0 is 850.09 and tmax is 1464.19, difference is 614.10
 
Straight-line intercept is 834.51, to match histogram fit t0, use tz_add 15.58
 
Straight-line intercept is 834.51, to match histogram fit t0, use tz_add 15.58
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{| border="0" cellpadding="2"
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|[[Image:cdc_run_32235_dt_ch_thr5.png|thumb|x250px|Drift time vs channel number, threshold 5#sigma]]
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|[[Image:cdc_run_32235_dt_ch_amp180.png|thumb|x250px|Drift time vs channel number, threshold 5#sigma and amplitude>180]]
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|}
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{| border="0" cellpadding="2"  
 
{| border="0" cellpadding="2"  

Revision as of 09:58, 26 May 2013

Boards E8, E9, E10
Boards E8, E9, E10, max amp histo, threshold 5
Boards E8, E9, E10, drift time, threshold 5
Boards E8, E9, E10, max amp histo, threshold 6#sigma
Boards E8, E9, E10, drift time, threshold 6
Boards E8, E9, E10, drift time fit, threshold 6

Drift time fit Estimate of t0 is 850.09 and tmax is 1464.19, difference is 614.10 Straight-line intercept is 834.51, to match histogram fit t0, use tz_add 15.58

Drift time vs channel number, threshold 5#sigma
Drift time vs channel number, threshold 5#sigma and amplitude>180


Number of hits which were not on the fitted track
Off-track hits vs total hits
Event 23, 4 hits off-track
Event 23, 48 hits off-track
Event 23, 21 hits off-track

Resolutions using tz=16 and Garfield for 2100V, 51Ar, 49CO2

Resolution, ALL CHANNELS, violet=total hits<24, dk blue: 5 or less hits off track
Resolution vs channel number
Resolution, E9 board channels, <5 hits off track
Resolution vs driftradius
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