Difference between revisions of "CDC straight straws"
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|- | |- | ||
!-dist(mm) | !-dist(mm) | ||
− | !8mm ( | + | !8mm (2.1kV) |
!9mm (2.1kV) | !9mm (2.1kV) | ||
!10mm (2.1kV) | !10mm (2.1kV) | ||
Line 162: | Line 162: | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
|[[Image:run_32292_trks39_1550up_z.png|thumb|x500px|close-up of tracks with ch 39 drift time > 1550]] | |[[Image:run_32292_trks39_1550up_z.png|thumb|x500px|close-up of tracks with ch 39 drift time > 1550]] | ||
− | |[[Image:run_32292_trks39_1550up.png|thumb|x500px|ch 39 drift time > | + | |[[Image:run_32292_trks39_1550up.png|thumb|x500px|ch 39 drift time > 1550]] |
|[[Image:run_32292_trks39_800up_z.png|thumb|x500px|close-up of tracks with ch 39 drift time > 800]] | |[[Image:run_32292_trks39_800up_z.png|thumb|x500px|close-up of tracks with ch 39 drift time > 800]] | ||
|} | |} | ||
Line 210: | Line 210: | ||
|} | |} | ||
+ | Wire 34 in its improved tabled position | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad8mm_resx34.png|thumb|x250px|Resolution vs drift radius ch34, >80% hits on track, 8mm Garfield r]] | ||
+ | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad8mm_res34.png|thumb|x250px|Resolution ch34, >80% hits on track, 8mm Garfield r]] | ||
+ | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad8mm_res34_5mm.png|thumb|x250px|Resolution ch34, drift radius > 5mm, >80% hits on track, 8mm Garfield r]] | ||
+ | |} | ||
Assumed straw radius of 10mm (not real 8mm) for Garfield x-t tables | Assumed straw radius of 10mm (not real 8mm) for Garfield x-t tables | ||
Line 215: | Line 221: | ||
|[[Image:cdc_run_32292_5149_tz16_tfix1000_rad10mm_resx34.png|thumb|x250px|Resolution vs drift radius ch34, >80% hits on track, 10mm Garfield r]] | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad10mm_resx34.png|thumb|x250px|Resolution vs drift radius ch34, >80% hits on track, 10mm Garfield r]] | ||
|[[Image:cdc_run_32292_5149_tz16_tfix1000_rad10mm_res34.png|thumb|x250px|Resolution ch34, >80% hits on track, 10mm Garfield r]] | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad10mm_res34.png|thumb|x250px|Resolution ch34, >80% hits on track, 10mm Garfield r]] | ||
− | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad10mm_res34_5mm.png|thumb|x250px|Resolution ch34, drift radius > 5mm, >80% hits on track, 10mm Garfield r]]} | + | |[[Image:cdc_run_32292_5149_tz16_tfix1000_rad10mm_res34_5mm.png|thumb|x250px|Resolution ch34, drift radius > 5mm, >80% hits on track, 10mm Garfield r]] |
+ | |} |
Latest revision as of 09:31, 18 March 2014
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
Resolutions using tz=16 and Garfield for 2100V, 51Ar, 49CO2
Different scint orientations
Drift time fits, hit threshold 5#sigma
Hit threshold 6#sigma
Hit threshold 6#sigma
-dist(mm) | 8mm (2.1kV) | 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 |
Drift time fit, ch 30, hit threshold 6#sigma
Resolution for ch30, hit threshold 6#sigma
Resolution for ch30, hit threshold 6#sigma, Garfield tables for 51% Ar, 49% CO2
x and y resolution for ch34, driftradius>5mm, hit threshold 6#sigma, Garfield tables for 51% Ar, 49% CO2
same again after moving tabled position of wire 34 from x,y to x-180um,y
Wire 34 in its improved tabled position
Assumed straw radius of 10mm (not real 8mm) for Garfield x-t tables