Prepare specifications/requirements

1
SC Magnet development plan at KEK
K. Tsuchiya
Prepare specifications/requirements
magnetic and mechanical characteristics
operation mode Development of Test
facility - dedicated test facility
to study the detailed characteristics
( - cryomodule to confirm the real operation)
Development of SC magnet new
type magnet would be studied and developed
6 magnets should be built for RD
2
Specifications
Quad Gradient 60
T/m Beam aperture gt 70 mm
Current 100 A (?)
Magnetic length (?)
Physical length (?)
Field quality b6 _at_
mm ?
other multipoles ?
Hysteresis
? Operation temp.
2 K (?) Cooling method
(?) Leakage field
?
Alignment errors ?x , ?y, ?q?
? Dipole BL
0.05 Tm
3
Test facility and items to be studied

• 1) dedicated test facility to study the detailed
  characteristics
• transfer func. and multipole
  measurement
• hysteresis measurement
• magnetic center movement (magnet
  body)
• leakage field measurement
• 2) cryomodule to confirm the real operation
• cool down test
• quench recovery test
• magnetic center movement
• leakage field confirmation

4
SC magnet RD

• Magnet design
• - type
• TESLA type
• easy coil winding but
  messy wire connection
• ---gt new type - conduction cooling
• - simple
  assembling
• - where is the best place for the
  dipoles ?
• - how to reduce the leakage field ?
• 2) How many magnets should be built ?
• - 3 prototype magnets
• - 3 magnets to confirm the final
  performance

5
Budget and manpower

• Budget
• - dedicated test facility
  1.5 M
• cooling system
• field measurement system
• - 6 magnets
  1.5 M
• - magnet installation into cryomodule
  0.3 M
• and test operation
• Manpower
• magnet design fabrication 2
  FTE/ year
• cooling system
  1.5 FTE/ year
• field measurement system
  1.5 FTE/ year