Effect of Forward/Backward Tilt of Upper Half of 8-Pole Wiggler
and
Modelling Coil Selection for Wiggler 14
CESRc Working Group Meeting
16 January 2004
The first picture shows an exaggerated tilt of +- 3 inches.
The following plots of field integrals show the effect of
a tilt of +- 50 mils, i.e. a tilt where the forward
and backward ends of the upper half differ vertically by
2.5 mm. Such a large tilt is excluded by the construction
tolerances and anyway only produces a field integral of
about 2 gauss-meters, so is unlikely to be the cause
of the effects we have seen in the measured field integrals.
The transfer functions for the model of wiggler 14 show that
the proposed coil selection will give a field quality
within specifications. After the talk, the calculation
of the field integrals was completed and showed that the
field integrals are within specifications as well.
Creation date: 01/16/04.