Very low noise AC/DC power supply systems for large detector arrays
Review of Scientific Instruments, ISSN: 1089-7623, Vol: 86, Issue: 12, Page: 124703
2015
- 23Citations
- 12Captures
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Metrics Details
- Citations23
- Citation Indexes23
- 23
- CrossRef18
- Captures12
- Readers12
- 12
Article Description
In this work, we present the first part of the power supply system for the CUORE and LUCIFER arrays of bolometric detectors. For CUORE, it consists of AC/DC commercial power supplies (0-60 V output) followed by custom DC/DC modules (48 V input, ±5 V to ±13.5 V outputs). Each module has 3 floating and independently configurable output voltages. In LUCIFER, the AC/DC + DC/DC stages are combined into a commercial medium-power AC/DC source. At the outputs of both setups, we introduced filters with the aim of lowering the noise and to protect the following stages from high voltage spikes that can be generated by the energy stored in the cables after the release of accidental short circuits. Output noise is very low, as required: in the 100 MHz bandwidth the RMS level is about 37 μV (CUORE setup) and 90 μV (LUCIFER setup) at a load of 7 A, with a negligible dependence on the load current. Even more importantly, high frequency switching disturbances are almost completely suppressed. The efficiency of both systems is above 85%. Both systems are completely programmable and monitored via CAN bus (optically coupled).
Bibliographic Details
AIP Publishing
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