Title of article :
Simulation and measurement of the fringe field of the 1.5 T BaBar solenoid
Author/Authors :
Antokhin، نويسنده , , E. and Buzykaev، نويسنده , , A. and Chupyra، نويسنده , , A. and Fedorov، نويسنده , , D. and Ganzhur، نويسنده , , S. and Kolachev، نويسنده , , G. and Litvinov، نويسنده , , A. and Medvedko، نويسنده , , A. and Mikerov، نويسنده , , V. and Mikhailov، نويسنده , , S. and Onuchin، نويسنده , , A. and Singatulin، نويسنده , , Sh. and Aleksan، نويسنده , , R. and Bourgeois، نويسنده , , Ph. and Gosset، نويسنده , , Theodore L. and Graffin، نويسنده , , P. and London، نويسنده , , G. and Mols، نويسنده , , J.-Ph. and Toussaint، نويسنده , , J.-Ch. and Berndt، نويسنده , , M. and Coombes، نويسنده , , R. and Ecklund، نويسنده , , S. and Jensen، نويسنده , , D. and Keller، نويسنده , , L. and Krebs، نويسنده , , J. and Lynch، نويسنده , , H. and Wolf، نويسنده , , Z.، نويسنده ,
Pages :
24
From page :
24
To page :
47
Abstract :
In the context of the SLAC PEP-II asymmetric e+e− collider and the BaBar detector with its 1.5 T solenoid, we have calculated and measured the fringe field at the nearby beam elements and at the position of the photomultipliers external to the return iron but within a specially designed iron shield. The comparisons of these measurements with the simulations based on finite element analysis are remarkably good, within about 5 G at the most critical beam element. The field at the photomultipliers is less than 1 G, in agreement with the simulation. With a simple method of demagnetization of the shield, a maximum field of 0.6 G is obtained.
Keywords :
Finite element analysis , Magnetic shielding , B-factory experiment , CP-violation , Measurements of magnetic fields
Journal title :
Astroparticle Physics
Record number :
2009630
Link To Document :
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