Difference between revisions of "CDC B field"

Revision as of 12:01, 30 April 2014

Magnetic field

CDC space Btot (T) vs r and z for 1350A

CDC volume occupies z=17 to 167 and r=10 to 60

Drift times from Garfield
Garfield drift times	Zoomed in at small radius	Zoomed in at large radius

Drift times from Garfield, edited
Zoomed in at small radius

Individual fits to drift time difference [0]*radius**[1]
Fit f(r) to each curve	Fit of param 0 values	Fit of param 1 values

One fit to drift time difference
One fit f(B,r) for all curves

Max error between fitted function and time difference is 2.3ns at radius 7.6mm in 1.7T dataset

@@ Line 1: / Line 1: @@
 {| border="0" cellpadding="2"
-|+Mean change in ADC value
+|+Magnetic field
-[[Image:cdc_Bfield_1350A.png|thumb|x500px|CDC space Btot vs r and z for 1350A]]
+[[Image:cdc_Bfield_1350A.png|thumb|x500px|CDC space Btot (T) vs r and z for 1350A]]
 |}