[Bteam] ARC1 and ARC2 optics

[Arne Freyberger]

I've completed the exercise of creating self-consistent optics for Arc1 
and Arc2.   As I am going off the grid again tomorrow until Sunday, I 
doubt I'll get to Arc3 until Monday.   I've attached my working notes 
for Arc1 and Arc2 as well as the lattice files.   If you look at the 
tables that hold the differences between the original deck values and 
the new self-consistent values you will see that for Arc1 the changes 
are relatively small/safe.  But for Arc2, since the 2S quads were at 0 
or near zero in the design the new self-consistent values represent a 
bit of departure from the original design decks.   The quad values in 
the 2S are modest, but non-zero.

I'd like to load these values after the initial ORFP (perhaps as early 
as Tuesday) so anyone who has time to look these changes  I'd appreciate 
an extra set of eyes on things before we take a path leads to disaster.

Happy New Year!
Arne

-- 
Director of Accelerator Operations
Jefferson Lab           Office: (757) 269-6268
12000 Jefferson Avenue  Cell:   (757) 876-6289
Newport News, VA 23606  Email:  freyberg at jlab.org

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