Task List for Phase II Rotatable Collimator Project at SLAC

1
Task List for Phase II Rotatable Collimator
Project at SLAC
US LHC Accelerator Research Program
BNL - FNAL- LBNL - SLAC

• 30 January 2007
• CERN/LARP Video Meeting
• Tom Markiewicz/SLAC

2
Steps on Path to a Thermal Test of a Full Length
Cooled Jaw 1 Test Pieces

• Braze Test 1
• Wind any available 10mm x 10mm tubing on
  convenient sized and available copper stock for
  mandrel and jaws
• Develop and document braze procedures
• Section for braze inspection, document results
• Coil winding Procedure and hardware
• Develop procedure and tooling to wind available
  tubing on short 200mm length Aluminum mandrel
• Test 3-axis CNC milling procedure required to
  machine U-bend in cooling pattern
• Braze Test 2
• Machine short 200mm copper mandrel
• Wind annealed available tubing on copper mandrel
  and stake in place to hold
• Braze tubing to mandrel
• Machine OD and add groove to hold braze wire
• Machine 4 quarter 200mm jaws
• Braze jaws with wire foil
• Vacuum test for virtual leaks
• Section for braze inspection, document results

3
Braze Test 3

• Fab a 2nd 200mm mandrel on CNC milling machine
  with space on downbeam end for U-bend
• Test wind coil with downstream U-Bend
• Braze coil
• Braze 4 quarter round jaws (more practice needed)
• Under discussion use 8 quarter round jaw
  sections to make sure butt brazes pose no problem
  (as promised)

4
Should We Consider a lt1m Jaw Protected by a
non-rotating absorber for Improved Performance
under Thermal Load?
5
Is this a better way to use the available space
or slots?
collimator
abs
10s?
1 m
Or, can we consider using a empty upbeam slot
for such a protective absorber?