 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 253, 48 hits off-track |
 Event 1037, 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 |
Different scint orientations
 Boards E8, E9, E10, little scintillators |
 Boards E8, E9, E10, big scintillators, across CDC |
 Boards E8, E9, E10, big scintillators, along CDC |
 Boards E8, E9, E10, big scintillators, along CDC, fit to thr5 data |
Drift time fits, hit threshold 5#sigma
|
|
 big scintillators, across CDC |
 big scintillators, along CDC |
Hit threshold 6#sigma
|
|
 big scintillators, across CDC |
 big scintillators, along CDC |
 drift time for each channel |
|
 drift time for channels 34, 35 |
 max amplitude for channels 34, 35 |
 pedestal width for channels 34, 35 |
 max amplitude vs drift time for channel 34 |
 max amplitude vs drift time for channel 35 |
 drift times with ch 34 nonzero |
 drift times with ch 34 drift time > 1500 |
 tracks with ch 34 drift time > 800 |
 tracks with ch 34 drift time > 1550 |
 close-up of tracks with ch 34 drift time > 1550 |
Drift times (ns) from Garfield for 2110V, 50/50 gas mix, different tube radii
| -dist(mm)
|
8mm (2kV)
|
9mm (2.1kV)
|
10mm (2.1kV)
|
| 6mm |
381 |
387 |
394
|
| 7mm |
527 |
535 |
544
|
| 7.5mm |
608 |
618 |
628
|
| 7.8mm |
660 |
670 |
681
|
| 8mm |
|
706 |
717
|
| 8.5mm |
|
800 |
813
|
| 9mm |
|
|
914
|
| 9.5mm |
|
|
1020
|
