My earlier assessment of Dennis Wright's TN43 (see
http://www.phys.ualberta.ca/~E614/Projects/E614-S3/00009/ )
indicates that we can expect a phi dependence in the radial field at the
entrance to the yoke at the level of 10G/mm, where the denominator is the
mis-centering of the solenoid in the yoke.

This assymetry in the radial field is a concern for the Xi measurements,
so it should be fixed.  The assymetry itself is the concern, and this
assymetry is readily measurable.

Therefore, Curtis Ballard and I propose that during the initial
commissioning, the assymetry in the radial field be measured, and that the
centering of the solenoid be tweaked to bring that radial field assymetry
effectively to zero.

We will start with the solenoid in its current position.  Therefore, we
expect to confirm the calculated 10G/mm given the 1 mm offset in the
solenoid position relative to the yoke which presently exists.

				nate

*************************************************
Nate Rodning, Professor of Physics
Associate Chair, Physics
University of Alberta
Edmonton, Alberta   T6G 2N5

(780)   492 - 3518
Fax:    492 - 0714
rodning@phys.ualberta.ca
http://www.phys.ualberta.ca/~rodning/rodning.html

Created for the The Center for Subatomic Research E614 Project Projects Page.

Created by The CoCoBoard.