ELENA Project Review Power Converters John Baillie TE/EPC/MPC 8th October 2013

1ELENA Project Review

Power ConvertersJohn Baillie TE/EPC/MPC

15th October 2013Technology Department

Overview of Power Converters for ELENAAround 400kVA Installed PowerAll power derived from 400V Network

Ring: 26 Magnetic Circuits

Electron Cooler: 11 CircuitsTransfer Lines: 12 Magnetic Circuits184 Electrostatic CircuitsTotal: 233 CircuitsTechnology DepartmentCycling Magnetic CircuitsExpected duration up to 30s

Maximum ramp time of 1s has been assumed for dimensioning of ring power convertersMagnetic Elements in the ring will follow a varying current or field reference.Uncertainty of 500ppm, referred to instantaneous requested current/field, must be respected at all energy levelsAll circuits require relatively small voltages at lowest energy level

Technology DepartmentELENA Ring: Overview of CircuitsMagnet TypeNumber of CircuitsNumber of Magnets in series per circuitTotal Circuit Resistance / mTotal Circuit Inductance / mFlat-top Current / AMinimum Current / AMaximum Voltage / VPower Converter Model and Accuracy ClassNominal Voltage / VNominal Current / AUncertainty (one year) / mAMinimum Relative UncertaintyBending PXMBHEKCWP1733723832644.662188AUXPS_Type 2 50ppm450400306.72x10-4QuadrupolePXMQNLGNAP 34479146375.10023.1CANCUN_50 100ppm305059.86x10-4SextupolePXMXNADNAP2218710212.9004.1CANCUN_50100ppm305051.74x10-3H/V CorrectorPXMCCAYWAP1611004405.5004.2CANCUN_50100ppm305059.12x10-4Skew QuadrupolePXMXNADNAP211000.013334.5003.7CANCUN_50100ppm305051.11x10-4Comp. SolenoidPXMLNAFNAC21TBDTBDTBDTBDTBDCANCUN_50100ppm30505TBDNotes: Total circuit impedances include cables which have been estimated based on conductor material, length and cross section