Storage Ring Correction Magnets
Drawings
Correction Magnet Assembly
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Sheet 5
***A16602
***A16603
Photos
Jim Humbert and Arlen Nyman with a
Storage Ring Corrector Magnet
Tables
- Design Specification Parameters for the Stroage Ring Horizontal/Vertical Correction Dipole Magnets
- Goals and Major Parameters for Storage Ring Horizontal and Vertical Correction Dipole Magnet
- Calculated Details of the Design Parameters for the Storage Ring Vertical/Horizontal Correction Magnets at 7.7 GeV (Vertical Dipole)
- Calculated Details of the Design Parameters for the Storage Ring Vertical/Horizontal Correction Magnets at 7.7 GeV (Horizontal Dipole)
Design Specification Parameters for the Strorage Ring Horizontal/Vertical Correction Dipole Magnets
H-corrector | V-corrector | |
Number | 318 m | 318 |
Magnetic Length | 0.16 T | .167 m |
Peak field @ 7.0 GeV | 0.16 mrad | .17 T |
Peak bend angle | 1.0 mm | 1.2 mrad |
Beam stay clear - Horizontal | ±35.0 mm | ±35.0 mm |
- Vertical | ±20.0 mm | ±20.0 mm |
Goals and Major Parameters for Storage Ring Horizontal and Vertical Correction Dipole Magnet
Dipole field | V | H | |
Number required | 318 | 318 | |
Peak field at 7.0 GeV | 0.16 | .167 | T |
| DB/B | at ± 3.2 mm | 0.08 | 0.08 | % |
Physical length | 0.14 | 0.14 | m |
Effective length | 0.16 | 0.17 | m |
Gap height | 98 | 85 | mm |
Conductor - Height | 5.1 | 4.7 | mm |
- Width | 4.8 | 4.2 | mm |
Hole diameter | 2.6 | 2.4 | mm |
Turns/pole (dipole) | 128 | 120 | |
Inductance | 5.9 | 7.6 | mH |
Resistance | 72 | 118 | mW |
Time constant | 82 | 64 | ms |
Peak current | 127 | 124 | A |
Voltage (DC) | 9.2 | 14.6 | V |
Water flow | 0.3 | 0.5 | gpm |
Water pressure drop | 80 | 80 | psi |
Water temperature rise | 17 | 13 | °C |
Calculated Details of the Design Parameters for the Storage Ring
Vertical/Horizontal Correction Magnets at 7.7 GeV
(Vertical Dipole)
Number of magnets | 318 |
Type of magnet | Dipole HF |
Type of excitation | DC |
Dipole field strength | 0.146 T |
DESIGN AND OPERATING PARAMETERS OF A SINGLE MAGNET:
Gap | |||
Gap axis shape | Straight | ||
Effective length of field along gap axis | 16.0 | cm | |
Total width of pole | 3.2 | cm | |
Total gap height | 9.8 | cm | |
Core | |||
Distance from - Field edge to - Core end | 4.49 | cm | |
- Pole side | 16.2 | cm | |
Overall core - Length (Magnetic steel ONLY) | 7.01 | cm |
Coil |
|||
Conductor material | Copper | ||
Conductor - Height | .508 | cm | |
- Width | .478 | cm | |
- Hole diameter | .264 | cm | |
- Corner radius | .08 | cm | |
Conductor min. bend radius (inside edge) | |||
- Width | 1.27 | cm | |
Insulation - Tape - Thickness - Turn | .0097 | cm | |
- Ground | .018 | cm | |
- Width - Turn | 2.5 | cm | |
- Ground | 2.5 | cm | |
Insulation total thickness - Turn | .019 | cm | |
- Ground | .107 | cm | |
Allowance between layers of conductor | .025 | cm | |
Allowance between rows of conductor | .025 | cm | |
Aberage turn length | 27.7 | cm | |
Ampere-turns per pole | 16212 | At | |
Number of layers of conductors per pole | 32 | ||
Number of conductor per layer per pole | 4 | ||
Effective number of turns per magnet | 256 | ||
Number of turns per cooling circuit | 128 | ||
Number parallel connected conductors per magnet | 1 |
Electrical |
|||
Stored energy | 47.4 | J | |
Total inductance | 5.9 | mH | |
Total coil resistance | 72.4 | mW | |
Supply current | 127 | A | |
Voltage across magnet | 9.2 | V | |
Overall magnet - Length | 14.15 | cm |
OPERATING PARAMETERS OF THE MAGNET SYSTEM:
Cooling circuit | ||
Coolant supply temperature | 32 | °C |
Coolant temperature gradient | 16.7 | °C |
Pressure gradient | 80 | psi |
Coolant flow | 84.6 | gpm |
Power losses | ||
Electrical losses in magnets | 369 | kW |
Electrical pwer to operate coolant pumps | 4.2 | kW |
SOME AUXILIARY PARAMETERS FOR THIS DESIGN ARE:
Cross-sectional area of conductor | .183 | cm2 |
Current density in conductor | 693 | A/cm2 |
Current density in coil | 373 | A/cm2 |
Reynold's number | 6135 | |
Coolant flow velocity | 153 | cm/s |
Maximum conductor temperature | 49.1 | °C |
Calculated Details of the Design Parameters for the Storage Ring Vertical/Horizontal Correction Magnets at 7.7 GeV (Horizontal Dipole)
Number of magnets | 318 |
Type of magnet | Dipole HF |
Type of excitation | DC |
Dipole field strength | 0.1686 T |
DESIGN AND OPERATING PARAMETERS OF A SINGLE MAGNET:
Gap | |||
Gap axis shape | Straight | ||
Effective length of field along gap axis | 16.7 | cm | |
Total width of pole | 5.39 | cm | |
Total gap height | 8.49 | cm | |
Core | |||
Distance from - Field edge to - Core end | 4.83 | cm | |
Overall core - Length (Magnetic steel ONLY) | 7.01 | cm |
Coil |
|||
Conductor material | Copper | ||
Conductor - Height | .467 | cm | |
- Width | .419 | cm | |
- Hole diameter | .241 | cm | |
- Corner radius | .08 | cm | |
Conductor min. bend radius (inside edge) | |||
- Width | 2.4 | cm | |
Insulation - Tape - Thickness - Turn | .0095 | cm | |
- Ground | .038 | cm | |
- Width - Turn | 2.5 | cm | |
- Ground | 2.5 | cm | |
Insulation total thickness - Turn | .019 | cm | |
- Ground | .107 | cm | |
Allowance between layers of conductor | .025 | cm | |
Allowance between rows of conductor | .025 | cm | |
Aberage turn length | 38.5 | cm | |
Ampere-turns per pole | 14822 | At | |
Number of layers of conductors per pole | 36 | ||
Number of conductor per layer per pole | 4 | ||
Effective number of turns per magnet | 240 | ||
Number of turns per cooling circuit | 60 | ||
Number parallel connected conductors per magnet | 1 |
Electrical |
|||
Stored energy | 58.2 | J | |
Total inductance | 7.6 | mH | |
Total coil resistance | 118 | mW | |
Supply current | 124 | A | |
Voltage across magnet | 14.6 | V | |
Overall magnet - Length | 14.15 | cm |
OPERATING PARAMETERS OF THE MAGNET SYSTEM:
Cooling circuit | ||
Coolant supply temperature | 32 | °C |
Coolant temperature gradient | 13.0 | °C |
Pressure gradient | 80 | psi |
Coolant flow | 168 | gpm |
Power losses | ||
Electrical losses in magnets | 572 | kW |
Electrical pwer to operate coolant pumps | 8.3 | kW |
SOME AUXILIARY PARAMETERS FOR THIS DESIGN ARE:
Cross-sectional area of conductor | .145 | cm2 |
Current density in conductor | 851 | A/cm2 |
Current density in coil | 435 | A/cm2 |
Reynold's number | 6423 | |
Coolant flow velocity | 182 | cm/s |
Maximum conductor temperature | 45.2 | °C |
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