| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2010: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Research Abstract |
The portable magnetometer system with a high-Tc SQUID sensor attached on a sapphire rod, being cooled by thermal conduction, was developed. We have designed and fabricated magnetometers with series-SQUID arrays to achieve higher S/N ratio compared to that for a single SQUID. We found that improvement of modulation voltage for more than two SQUIDs is small probably due to the wide spread of critical currents and the phase-incoherence of voltage-flux characteristics among SQUIDs.
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