2.6 Proton Linac The proton linac is the first machine of the accelerator chain that provides the primary proton beam needed for the production of antiprotons. Proton Linac Parameters Energy 70 MeV Maximum design current 70 mA Current at SIS18-injection 35 mA 7.9·10 12 Protons per pulse Beam pulse length 36 µs (35 mA) RF-frequency 325.224 MHz ≤ 4 Hz Repetition rate ≤ 2.1 mm mrad (35 mA), Beam emittance (transv., tot., norm.) 4.2 mm mrad (70 mA) ≤ ±10 -3 Beam momentum spread (tot., norm.) ≈ 42 m Overall length 2.7.1 System Design 2.7.1.1 General Layout to SIS18 Source LEBT RFQ CH-DTL to Dump Re-Buncher 95 keV 3 MeV 70 MeV General layout of the proton linac.
2.7.2 Magnets 2.7.2.1 Solenoid Magnets Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of magnets 2 Normal or super conducting nc Max. field T 0.76 Min. field T 0.0 Effective length, L m 0.263 Aperture radius mm 80 Max. ramp rate T/s dc Usable horizontal aperture mm 80 Usable vertical aperture mm 80 Integrated random field error < 0.0005 BL/BL Overall length m 0.31 Overall width m 0.550 Overall height m 0.550 Iron/copper weight kg tbd Overall weight t tbd Number of turns 288 Current at max field A tbd Inductance per magnet mH tbd Resistance per magnet tbd Power consumption kW tbd Coil copper cross section 125 x 240 mm mm Cooling channel diameter. mm 4.5 Cooling water flow rate l/min 34 Cooling water temp. rise K 12 bar Cooling water pressure drop 8.0
2.7.2.1.1 Steerer Magnets Type S1 Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of magnets 2 Normal or super conducting nc Max. field * Eff. Length Tm 0.0015 Effective length, L m 0.08 Aperture radius mm 80 Max. ramp rate T/s dc Usable horizontal aperture mm 80 Usable vertical aperture mm 80 Integrated random field error < 0.02 BL/BL Overall length m 0.310 Overall width m 0.550 Overall height m 0.550 Iron/copper weight kg tbd Overall weight t tbd Number of turns 2*7 Current at max field A tbd Inductance per magnet mH tbd Resistance per magnet tbd Power consumption kW tbd Coil copper cross section 6x6 mm mm Cooling channel diameter. mm 0 Cooling water flow rate l/min 0 Cooling water temp. rise K - bar Cooling water pressure drop -
2.7.2.2.2 Steerer Magnets Type S2 Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of magnets 5 Normal or super conducting nc Max. field * Eff. Length Tm 0.0125 Effective length, L m - Aperture radius mm 20 Max. ramp rate T/s Bmax / 25 ms Usable horizontal aperture mm 20 Usable vertical aperture mm 20 Overall length m 0.1 Overall width m tbd Overall height m tbd Iron/copper weight kg tbd Overall weight t tbd Number of turns tbd Current at max field A tbd Inductance per magnet mH tbd Resistance per magnet tbd Power consumption kW tbd Coil copper cross section tbd mm mm Cooling channel diameter. mm tbd Cooling water flow rate l/min tbd Cooling water temp. rise K tbd bar Cooling water pressure drop tbd
2.7.2.3.3 Quadrupole Magnets Type C Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of magnets 24 Normal or super conducting nc Max. gradient T/m 72 Min. gradient T/m 3.35 Effective length, L m 0.084 Aperture radius mm 15 Max. ramp rate T/ms 2880 Usable horizontal aperture mm 15 Usable vertical aperture mm 15 Overall length m 0.089 Overall width m 0.180 Overall height m 0.180 Iron/copper weight kg tbd Overall weight t 0.017 Number of turns per pole 8 Current at max field A 946 Inductance per magnet mH 0.213 Resistance per magnet 0.027 Power consumption kW 24.3 Coil copper cross section tbd mm mm Cooling channel diameter. mm tbd Cooling water flow rate l/min 4.8 Cooling water temp. rise K 25 bar Cooling water pressure drop 2.6 2.7.2.3.4 Quadrupole Magnets Type D
Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of magnets 11 Normal or super conducting nc Max. gradient T/m 72.8 Min. gradient T/m 3.35 Effective length, L m 0.046 Aperture radius mm 15 Max. ramp rate T/ms 2912 Usable horizontal aperture mm 15 Usable vertical aperture mm 15 Overall length m 0.051 Overall width m 0.180 Overall height m 0.180 Iron/copper weight kg tbd Overall weight t 0.009 Number of turns per pole 8 Current at max field A 963 Inductance per magnet mH 0.116 Resistance per magnet 0.0235 Power consumption kW 21.8 Coil copper cross section tbd mm mm Cooling channel diameter. mm tbd Cooling water flow rate l/min 4.36 Cooling water temp. rise K 25 bar Cooling water pressure drop 1.89 2.7.2.3.5 Quadrupole Magnets Type E Physical parameters fixed Design/engineering fixed Integration/DMU check done
Procurement start Procurement time Number of magnets 2 Normal or super conducting nc Max. gradient T/m 40 Min. gradient T/m 10 Effective length, L m 0.179 Aperture radius mm 20 Max. ramp rate T/ms 1600 Usable horizontal aperture mm 20 Usable vertical aperture mm 20 Integrated random field error < 0.025 GL/GL Overall length m 0.166 Overall width m 0.240 Overall height m 0.240 Iron/copper weight kg 43.2/5.52 Overall weight t tbd Number of turns per pole 20 Current at max field A 369 Inductance per magnet mH 1.419 Resistance per magnet 0.0719 Power consumption kW 9.8 Coil copper cross section 12.566 mm mm Cooling channel diameter. mm 3 Cooling water flow rate l/min 4.71 Cooling water temp. rise K 30 bar Cooling water pressure drop 6.55
2.7.2.4 Dipole Magnets Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of magnets 2 Design H-type Type rectangular magnet Normal or super conducting nc Max. field T 1.3 Min. field T 0.33 Effective length, L m 0.785 (beam) Bending angle deg 45 Bending radius m 1.000 Entrance/Exit edge angle deg 20.0/20.0 (ver.foc. each) Pole gap hight mm 60.0 Max. ramp rate T/s 52.0 Usable horizontal aperture mm 20 Usable vertical aperture mm 20 Integrated random field error 0.002 BL/BL Overall length m 0.709 Overall width m 0.645 Overall height m 0.48 Iron/copper weight kg 1250/231 Overall weight t tbd Number of turns per pole 36 Current at max field A 905 Inductance per magnet H 0.01984 Resistance per magnet 0.02075 Power consumption kW 17.0 Coil copper cross section 155.58 mm mm Cooling channel diameter. mm 7 Cooling water flow rate l/min 8.2
Cooling water temp. rise K 30 bar Cooling water pressure drop 7.2
2.7.3 Power Converters 2.7.3.1 Solenoid Magnet Power Converter Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of power converter 2 Number of magnets in series 1 Max. current A tbd Max. current ramp A/s tbd Max. relative ripple tbd Rise time ms 50000 Flat top time s any Max. driving voltage V tbd Max. active power kW tbd Max. apparent power kVA tbd 2.7.3.2.1 Steerer Magnet Type S1 Power Converter (PS_S1) Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of power supplies 4 Number of magnets in series 1 Rated current A tbd Max. current rate A/s tbd Max. relative deviation (ripple) tbd Rise time ms 50000 Flat top time s any Max. driving voltage V tbd Max. active power kW tbd Max. apparent power kVA tbd
2.7.3.2.2 Steerer Magnet Type S2 Power Converter (PS_S2) Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of power supplies 10 Number of magnets in series 1 Rated current A tbd Max. current rate A/s tbd Max. relative deviation (ripple) tbd Rise time ms 25 Flat top time s 0.005 Repetition rate Hz 4 Max. driving voltage V tbd Max. active power kW tbd Max. apparent power kVA tbd 2.7.3.3.1 Quadrupole Magnet Power Converter PS_QA Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of power supplies 19 Number of magnets in series 1 Rated current A 963 Max. current rate A/s 38520 Max. relative deviation (ripple) tbd Rise time ms 25 Flat top time s 0.005
Repetition rate Hz 4 Max. driving voltage V 45.4 Max. active power kW 42.9 Eff. apparent power kVA 5.4 2.7.3.3.2 Quadrupole Magnet Power Converter PS_QB Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of power supplies 8 Number of magnets in series 2 Rated current A 963 Max. current rate A/s 38520 Max. relative deviation (ripple) tbd Rise time ms 25 Flat top time s 0.005 Repetition rate Hz 4 Max. driving voltage V 67.5 Max. active power kW 65.0 Eff. apparent power kVA 7.6 2.7.3.3.3 Quadrupole Magnet Power Converter PS_QC Physical parameters fixed Design/engineering fixed Integration/DMU check done Procurement start Procurement time Number of power supplies 1 Number of magnets in series 2 Rated current A 369
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