We make some considerations on the question of driving the cable from the cryogenic stage of refrigerators to the room temperature, in the case of multiplexed detector array systems where a high total Shannon information capacity is required. We have constructed large SQUID arrays for the purpose, some of which exhibit lower than 5 × 10−8 Φ0 Hz−1/2 flux noise at 4.2 K and do not require magnetic shielding in a typical laboratory environment. The option of using class-D amplifiers to reduce the cryogenic heat load is briefly reviewed.
|Journal||Journal of Physics: Conference Series|
|Issue number||Part 5|
|Publication status||Published - 2012|
|MoE publication type||A1 Journal article-refereed|
|Event||26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China|
Duration: 10 Aug 2012 → 17 Aug 2012
Conference number: 26