Log entry time 12:20:06 on July25,2005

Entry number 149413

Object 3 in the modulation code, which in software refers to MAT1C03H, is, in 
fact, controlling MAT1C02V.  Software control for MAT1C02V is, in fact, 
controlling MAT1C03H.  So the physical coils are just like their names suggest, 
and we were mistaken to think otherwise.

Since we had planned to move a vertical magnet from 1C03 to 1C02, and found 
that the configuration we proposed to create was already there, we needed an 
alternate plan.  After casting about a bit, we decided to move the degenerate 
1C05 vertical modulation coil to girder 1C06.

So, we moved beam modulation magnet MAT1C05V from the 1C05 girder to the 1C06 
girder (just before MAT1C06H).  From Jay's model, this position is not clever 
(it sits at a node of beta, meaning that this coil should have no affect at 
all).  However, since the predictions for the vertical beta function are 
verifiably imprecise (the target is not near a beta node, for instance) and 
there is significant phase advance in this region, this seemed to be as 
promising as any other approach.

Nothing in analysis configurations, etc, needs to change.  Accelerator may 
change their MEDM screens to reflect the setpoint on each magnet.