Oct 3-4, 2011 Replacement Solenoid

Items for followup from previous meeting

1. Mechanical properties of Cu after soldering and annealing (Cold Work residual)
   • Ettore: Depends on thickness of conductor
   • Measure Cu (4.4 mm thick) from MECO project? (MIT but needs funding)
2. Pulling force for winding the "hard way"? (MIT but needs funding)
3. Ettore: would like to make the argument for 3 coils more crisp. (final design may have a different solution, present proposal is workable -no show-stoppers- and based on existing experience and manufacturing expertise available)
4. Fringe field (MIT)
   • Alexey will calculate fringe fields using the actual iron configuration with new cladding for the existing solenoid at z=6 and 6.5 m. With filling holes and without.
   • Tim will make drawings available with the new cladding. (Tim send a note with specifics)
5. Verify actual lengths of SSC superconductor and propose specific coils for use in spare solenoid (JLab).
6. Check eddy currents in radiation shield (homework for final design)
7. Ettore: investigate use of stainless outer cylinder for mechanical strength (leave to final design? linked to manufacturer capabilities, Alexey to add to comments about 3 coil rational)
8. Provide latest information on switches in dump circuit (mechanical vs. solid state) (Brad, M-Technologies, Steve Fairfax)
9. check stresses at attachment points of axial rods (leave to final design)
10. Check heat generation due to sliding action between coil and structure (friction) (MIT)
11. Calculate cooldown time (leave to final design)

Topics

1. Design inputs and interfaces :
   • Magnetic configuration
   • Cables availability
   • Cryogenic
   • Electrical
   • Mechanical configuration and loads
   • Instrumentation
2. Design choices
   • Conductor
   • Number of coils
   • Manufacturing
   • Operating current
3. Design description and analyses:
   • Solenoid configuration
   • Stress analysis and structural assessment
   • Thermal and quench analysis
   • Fault analysis?
4. Concluding remarks:
   • General discussion
   • Action list.

Tentative Agenda

Monday 3 room F326 2.30-6.30

Attending: Brad, Alexey, Craig Mille (MIT); Elton, Eugene, Tim, Geore, Ettore, Glenn (JLab).

Proposed talks /discussion

1. Magnet and magnetic design description
2. Conductor design and quench performance
3. Structural analysis

Tuesday 4 room F226 8:30-11:00

1. Cryogenics

Minutes

Participants: