Peak Fields for Main Current of 144 A in 7-Pole Wiggler Nr 2,

Trim Current for 7-Pole Wiggler Nr 2

and

Full 8/8 Model for Wiggler 3 with Measured Coil Offsets



CESRc Working Group Meeting

10 January 2003

Postscript files are also available:

Outline

7-pole wiggler Nr 2 B_Y vs Z on axis
The peak values are shown in the table in the outline. The coil offsets are reflected in the lack of symmetry in Z.

7-pole wiggler Nr 2 transfer function: horizontal kick vs X and Y
The trim current of 7.2 A was chosen such as to reduce the horizontal kick for a 1.8 GeV electron entering at X=Y=0 to less than 0.1 mrad.

7-pole wiggler Nr 2 First integral of B_Y vs X
For this choice of trim current of 7.2 A which makes the horizontal kick small, the residual integral is greater than 10 gauss-meters.

8-pole wiggler Nr 3 transfer functions: horizontal and vertical kicks vs X and Y
The measured coil offsets cause an on-axis horizontal kick of 200 microradians. The vertical kick vs X exhibits a skew quad component about half of what was measured for wiggler 1 when the coil offsets are taken into account.




Creation date: 01/10/03.