Oct 3-4, 2011 Replacement Solenoid
From GlueXWiki
Contents
Action item list
- Mechanical properties of Cu after soldering and annealing (Cold Work residual)
- Discussed in final report
- Ettore: Depends on thickness of conductor
- Measure Cu (4.4 mm thick) from MECO project? (MIT but needs funding)
- Pulling force for winding the "hard way"? (MIT but needs funding, what is the winding tension?)
- 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)
- 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)
- Verify actual lengths of SSC superconductor and propose specific coils for use in spare solenoid (JLab).
- Check eddy currents in radiation shield (homework for final design)
- 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)
- Provide latest information on switches in dump circuit (mechanical vs. solid state) (Brad, M-Technologies, Steve Fairfax [http:www.mtechnology.net web])
- check stresses at attachment points of axial rods (leave to final design)
- Check heat generation due to sliding action between coil and structure (friction) (MIT)
- Calculate cooldown time (leave to final design)
- Specify polyimide glass (Kapton) for ground insulation.
- Add bumpers to restrain the cold mass in a fault condition. (MIT)
- Acceptable tolerance in the assembly of the coil (8.4 mm radially)
- Provide solid works and step file for model (MIT)
- Find out how much dumped in the magnet during quench (run quench program with Rdump=0). It is 3.2 MJ to coil, balance to dump resistor.
- Show that current cryo plant is sufficient to run the magnet. (JLab)
- Add redundant switch to dump circuit.
Topics
- Design inputs and interfaces :
- Magnetic configuration
- Cables availability
- Cryogenic
- Electrical
- Mechanical configuration and loads
- Instrumentation
- Design choices
- Conductor
- Number of coils
- Manufacturing
- Operating current
- Design description and analyses:
- Solenoid configuration
- Stress analysis and structural assessment
- Thermal and quench analysis
- Fault analysis?
- 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
- Magnet and magnetic design description
- Conductor design and quench performance
- Structural analysis
Tuesday 4 room F226 8:30-11:00
- Cryogenics
Tuesday 4 room F227 11:00-1:00p.m.
Minutes
Participants: