5 May 1995
To: Distribution:
From: Stan Ecklund
Subject: "IR +- 1m Engineering"  Meeting Notes 5 May 1995

   We discussed the interferences at Q1.  At outer radius, there 
is 9.85 mm from magnetic material to inner support tube (SS) 
radius.  With 2 mm each for clearance and alignment, it leaves 
about 6 mm for containment; is this enough?
   On the inner radius, the quadrupole trim coil interferes with 
magnet blocks.  
   While there is enough cross sectional area for cables, the 20 
mm offset of Q1 (last weeks notes stating 21 were in error), 
requires space at the outboard end of B1 to route the cables to 
the available azimuth.  This space is not available.  
  Possible solutions to the Q1 interferences:
     1. Split Q1 into Q1a with smaller radii, and Q1b.
     2. Obtain trim function by rotating slices of Q1.
     3. Consider a dipole PM or coil superimposed on quadrupole.
     4. Run some cables outside support tube. Assembly??


Action Items:
1. Find solution to Q1 interferences. [Martin, Stan, Mike,..]
2. Look for ways to reduce cable interferences. [Roy]
3. Consider ways to make B1 support smaller. [Martin]
4. Temperature Specifications for B1, Q1.  []
5. Update drawing: [Martin Nordby, Fred Goozen]
     Switch upbeam(HER) flange and bellows, show flange pair.
     Shielding, rotated BPM, Radial Ion pump,...
6. HOM RF calculations with new mask geometry.  [Eddie Lin]
7. Check that a rotated BPM misses synchrotron rad fan. [Mike]
8. Maintain list of support tube parameters. [Hobey]
     add Q1 radii, offset, support barrel radii,...
9. Meet with Dave Coupal re shielding interferences. [Hobey]
10. Be cooling flow manifold, details. [Dieter]
 

Next Meeting: 13:00 Friday  12 May 1995 in the Yellow room with TV 
to LBL

attachments: Transparencies