A second generation quench detection system with two concurrent data logging modes was developed at Fermilab for testing superconducting magnets. The system consists of two functional components: An active quench detector based on a reconfigurable input/output module with an onboard field-programmable gate array (FPGA); and a data logger based on a set of simultaneous sampling ADC modules. The data logger has two concurrent modes of operation: A fast mode that is triggered to capture a user specified window of data at rates up to 10 kHz; and a continuous mode that can log data at rates between 0.1 Hz and 100 Hz continuously using the same data loggers. The modular design uses commercially available DAQ hardware in combination with programmable isolation amplifiers developed in-house. This approach allows the new system to be easily scaled to handle multiple magnets or magnets with more complex coil and lead voltage tap configurations. The new system has been used to test the MICE Spectrometer Solenoid. A detailed description of the system along with test results is presented in this paper.
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