Specification for the two-dipole tagging spectrometer
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Global Tagging Spectrometer Specification
Main beam momentum | 12 GeV/c |
Momenum range of analyzed electrons | 0.5 to 9 GeV/c |
Main beam radius | 26.685 m |
Main beam bending angle | 13.4° |
Entrance face angle for the first magnet | 5.9° |
Magnetic field (full excitation) | 15.0000 kG |
Pole gap | 30 mm |
Tagger Dipoles
Length | 3.09 m |
Width | 1.09 m |
Height | 1.41 m |
Weight | 38 Mg |
Separation between magnets | 40 cm |
Angle between magnets | 0.892° |
Tagger Dipole Coils
Total number of ampere turns for each magnet | 61560 |
Copper conductor dimensions | 11 x 11 mm2 |
Copper conductor hollow core | 7 mm diameter channel |
Conductor configuration of each coil | 7 x 12 |
Current density at nominal field | 4.44 A/mm2 |
Electrical resistance of each coil | 0.124 |
Current in conductor | 366.43 A |
Voltage drop across 4 coils connected in series | 181.7 V |
Total power consumption | 67 kW |
Cooling circuits per coil | 7 |
Total flow rate for 20◦C rise | 80 l/min |
Water supply pressure drop | 2.0 atm |
Outside dimension of each coil | 92 x 152 mm2 |
Coil treatment | should be vacuum impregnated |