Project

General

Profile

Feature #1547

MICE Step Pi in G4beamline

Added by Snopok, Pavel almost 8 years ago. Updated about 7 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Start date:
22 August 2014
Due date:
% Done:

100%

Estimated time:

Description

Copied Step Pi deck parameters from MAUS into G4beamline. Ran 10000 particles @ betaT=333 mm, epsT=6 mm, z=-4050 mm. Magnetic field on axis looks reasonable, agrees with the field map calculated by Diktys Stratakis. However, betaT does not look right, figure attached.


Files

mice_step_pi.g4bl (3.39 KB) mice_step_pi.g4bl Corresponding G4beamline deck Snopok, Pavel, 22 August 2014 08:00
beam.dat (591 KB) beam.dat Initial distribution: betaT=333 mm, epsT=6 mm, z=-4050 mm Snopok, Pavel, 22 August 2014 08:00
betaT.png (26.7 KB) betaT.png betaT Snopok, Pavel, 22 August 2014 08:00
Bz.png (21.7 KB) Bz.png Bz on axis Snopok, Pavel, 22 August 2014 08:00

Related issues

Related to Analysis - Feature #1543: Step pi design studyClosedRogers, Chris14 August 2014

Actions
#1

Updated by Rogers, Chris almost 8 years ago

Pavel, I think you have screwed up your beam file. I calculate your covariance matrix

[[  1.06194041e+03  -3.06889998e-01   3.92214947e+00  -7.63055664e+00]
 [ -3.06889998e-01   3.95478760e+02   8.71978569e+00   4.73348669e+00]
 [  3.92214947e+00   8.71978569e+00   1.03973165e+03   9.16092233e-01]
 [ -7.63055664e+00   4.73348669e+00   9.16092233e-01   3.88299507e+02]]

Should be (6 mm emittance)

[[ 1055.52342       -0.             0.          -632.87592112]
 [   -0.           760.21240555   632.87592112     0.        ]
 [    0.           632.87592112  1055.52342       -0.        ]
 [ -632.87592112     0.            -0.           760.21240555]]
#2

Updated by Rogers, Chris about 7 years ago

  • Status changed from Open to Closed
  • % Done changed from 0 to 100

I think this is closed...

Also available in: Atom PDF