Boards E8, E9, E10, max amp histo, threshold 5
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Boards E8, E9, E10, drift time, threshold 5
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Boards E8, E9, E10, max amp histo, threshold 6#sigma
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Boards E8, E9, E10, drift time, threshold 6
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Boards E8, E9, E10, drift time fit, threshold 6
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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
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Drift time vs channel number, threshold 5#sigma and amplitude>180
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Number of hits which were not on the fitted track
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Off-track hits vs total hits
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Event 23, 4 hits off-track
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Event 253, 48 hits off-track
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Event 1037, 21 hits off-track
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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
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Resolution vs channel number
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Resolution, E9 board channels, <5 hits off track
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Resolution vs driftradius
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Different scint orientations
Boards E8, E9, E10, big scintillators, across CDC, upstream end
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Boards E8, E9, E10, big scintillators, across CDC, downstream end
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Boards E8, E9, E10, big scintillators, along CDC
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Boards E8, E9, E10, big scintillators, along CDC, fit to thr5 data
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Drift time fits, hit threshold 5#sigma
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big scintillators, across CDC
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big scintillators, along CDC
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Hit threshold 6#sigma
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big scintillators, across CDC
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big scintillators, along CDC
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Hit threshold 6#sigma
big scintillators, along CDC, HV grounded to endplate (not HVBs)
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big scintillators, along CDC, added shielding to + HV cables
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drift time for each channel
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drift time for channels 34, 35
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max amplitude for channels 34, 35
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pedestal width for channels 34, 35
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max amplitude vs drift time for channel 34
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max amplitude vs drift time for channel 35
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drift times with ch 34 nonzero
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drift times with ch 34 drift time > 1500
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tracks with ch 34 drift time > 800
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tracks with ch 34 drift time > 1550
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close-up of tracks with ch 34 drift time > 1550
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Drift times (ns) from Garfield for 2110V, 50/50 gas mix, different tube radii
-dist(mm)
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8mm (2kV)
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9mm (2.1kV)
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10mm (2.1kV)
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6mm |
381 |
387 |
394
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7mm |
527 |
535 |
544
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7.5mm |
608 |
618 |
628
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7.8mm |
660 |
670 |
681
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8mm |
|
706 |
717
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8.5mm |
|
800 |
813
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9mm |
|
|
914
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9.5mm |
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|
1020
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Tracks for other straws with drift times>1550ns, searched 50k events for straws 36 and 38, 5k for the rest
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close-up of tracks with ch 39 drift time > 1550
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close-up of tracks with ch 39 drift time > 800
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close-up of tracks with ch 37 drift time > 800
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resolution for each channel
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Drift time fits, ch 30, hit threshold 6#sigma