| Presentation | 2005/2/3 Development of a TDEM Data Acquisition System Based on a SQUID Magnetometer for Mineral Exploration Eiichi ARAI, Toshihiko HAYASHI, Tatsuoki NAGAISHI, Hajime OHTA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We report on the research and development of a TDEM data acquisition system (SQUITEM) by JOGMEC using a highly sensitive high-temperature superconductor (HTS) SQUID vector magnetometer cooled by liquid nitrogen, which is suitable for mineral exploration. JOGMEC has achieved stable operation of all three channels during field tests. SQUITEM meets high requirements for slew rate (6.8mT/s), dynamic range (100dB) and bandwidth (DC-100kHz). It offers deeper penetration of depth than the conventional induction coil system because it can record the step response that decreases with time slower than the impulse response of the induction coil system. SQUITEM also performs horizontal gradient observations that can provide much better resolution of shallow conductive targets than conventional TDEM observations. We have obtained good reproducibility of SQUID data and correlation between the output signals of the reference induction coils and the derivatives of the SQUID signals in TDEM field tests. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HTS SQUID / TDEM / mineral exploration |
| Paper # | SCE2004-37 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2005/2/3(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of a TDEM Data Acquisition System Based on a SQUID Magnetometer for Mineral Exploration |
| Sub Title (in English) | |
| Keyword(1) | HTS SQUID |
| Keyword(2) | TDEM |
| Keyword(3) | mineral exploration |
| 1st Author's Name | Eiichi ARAI |
| 1st Author's Affiliation | Metals Exploration Group, Japan Oil, Gas and Metals National Corporation() |
| 2nd Author's Name | Toshihiko HAYASHI |
| 2nd Author's Affiliation | Metals Exploration Group, Japan Oil, Gas and Metals National Corporation |
| 3rd Author's Name | Tatsuoki NAGAISHI |
| 3rd Author's Affiliation | System & Electronic Equipment Division, Sumitomo Electric Hightechs Co., LTD. |
| 4th Author's Name | Hajime OHTA |
| 4th Author's Affiliation | System & Electronic Equipment Division, Sumitomo Electric Hightechs Co., LTD. |
| Date | 2005/2/3 |
| Paper # | SCE2004-37 |
| Volume (vol) | vol.104 |
| Number (no) | 655 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |