SQUIDs - Low Temperature Laboratory

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A Few Other Superconductors Element T c Aluminum 1.2 K Indium 3.4 K Tin 3.7 K Lead 7.2 K Niobium 9.2 K • “Type I” superconductors • Driven normal by magnetic fields less than 2000 gauss
Milestones in Superconductivity 1911 Kamerlingh Onnes discovers zero resistance 1957 Bardeen, Cooper and Schrieffer develop “BCS” theory
Page 1 and 2: SQUIDs: From Cosmology to Magnetic
Page 3 and 4: Milestones in Superconductivity 191
Page 5 and 6: The Discovery of Superconductivity
Page 7: Zero Resistance Magnetic field •
Page 13 and 14: Flux Quantization Φ = n Φ 0 J Φ
Page 15 and 16: • Cooper pairs tunnel through bar
Page 17 and 18: Temperature (Kelvin) Transition Tem
Page 21 and 22: The dc Superconducting Quantum Inte
Page 23 and 24: B N ~ 1 fT Hz -1/2 Superconducting
Page 25 and 26: Applications of SQUIDs: An Overview
Page 27 and 28: Neuromag ® 306-Channel SQUID Syste
Page 29 and 30: CardioMag Imaging System for Magnet
Page 31 and 32: 2G Superconducting Rock Magnetomete
Page 33 and 34: MAGMA-C1 Scanning SQUID Microscope
Page 35 and 36: Courtesy Stanford University and NA
Page 37 and 38: Searching for Axions: The Microstri
Page 39 and 40: Resonant Conversion of Axions into
Page 41 and 42: Noise Temperature R T -A [ T + T (
Page 43 and 44: Microstrip SQUID Amplifier Conventi
Page 45 and 46: Noise Temperature of Microstrip Amp
Page 47 and 48: Summary • Gain ≥ 20 dB for freq
Page 49: Energy z B 0 Nuclear Magnetic Reson
Page 52 and 53: Timeline Michael Crichton, 1999 “
Page 57 and 58: Three dimensional images of pepper
Page 59:
B = 13.2 mT int T 1 contrast images
Page 62:
Future directions for low-field MRI
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SQUIDs - Low Temperature Laboratory

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