Beam Current Transformer Calibration System

Full system

• FPGA based controller card
• 2 x Analogue precision pulsed current source
• PSU distribution card

Calibrator Controller

• 4 layer board
• 24 bit 4 MSPS sigma delta ADC
• EEPROM
• Voltage monitoring
• 4 x Opto-coupled LEMO inputs
• 2 x 10 GPIO with 3 pins dedicated to 3V3 for I2C etc.
• USB to QSPI bridge

Analogue Precision Pulsed Current Source

• 6 layer board
• Precision current source - 12ppm stability to 3 standard deviations.
• Deviates by less than 100ppm over full pulse.
• Internal current measurement system based on half bridge topology
• Adjustable precision reference voltage
• EEPROM
• 12 bit nano DAC
• 4 x selectable outputs

Testing Production