A Method of Detrapping Magnetic Flux in a SQUID Sensor Using an Integrated Thin-Film Heater
Summary :
We produced a double-layer thin-film heater to detrap magnetic flux in a SQUID sensor. The heater is integrated on a sensor chip, and consists of a lower resistor layer and an upper superconducting layer to cancel the magnetic field produced by the heater current. The SQUID sensor is cooled below its critical temperature with a temperature gradient to detrap the flux completely. To make the gradient, we had to decrease heater power to zero over an interval exceeding 10-4 second in our experiment, which is almost equal to the sensor chip's thermal time constant. The integrated heater effectively controls the temperature profile and detraps flux in the sensor.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E74-C No.7 pp.2029-2035
- Publication Date
- 1991/07/25
- Publicized
- Online ISSN
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- Type of Manuscript
- Special Section PAPER (Special Issue on Low Temperature Electronics)
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Kohtaroh GOTOH, Norio FUJIMAKI, Takeshi IMAMURA, Shinya HASUO, Akihiro SHIBATOMI, "A Method of Detrapping Magnetic Flux in a SQUID Sensor Using an Integrated Thin-Film Heater" in IEICE TRANSACTIONS on Electronics,
vol. E74-C, no. 7, pp. 2029-2035, July 1991, doi: .
Abstract: We produced a double-layer thin-film heater to detrap magnetic flux in a SQUID sensor. The heater is integrated on a sensor chip, and consists of a lower resistor layer and an upper superconducting layer to cancel the magnetic field produced by the heater current. The SQUID sensor is cooled below its critical temperature with a temperature gradient to detrap the flux completely. To make the gradient, we had to decrease heater power to zero over an interval exceeding 10-4 second in our experiment, which is almost equal to the sensor chip's thermal time constant. The integrated heater effectively controls the temperature profile and detraps flux in the sensor.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e74-c_7_2029/_p
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@ARTICLE{e74-c_7_2029,
author={Kohtaroh GOTOH, Norio FUJIMAKI, Takeshi IMAMURA, Shinya HASUO, Akihiro SHIBATOMI, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Method of Detrapping Magnetic Flux in a SQUID Sensor Using an Integrated Thin-Film Heater},
year={1991},
volume={E74-C},
number={7},
pages={2029-2035},
abstract={We produced a double-layer thin-film heater to detrap magnetic flux in a SQUID sensor. The heater is integrated on a sensor chip, and consists of a lower resistor layer and an upper superconducting layer to cancel the magnetic field produced by the heater current. The SQUID sensor is cooled below its critical temperature with a temperature gradient to detrap the flux completely. To make the gradient, we had to decrease heater power to zero over an interval exceeding 10-4 second in our experiment, which is almost equal to the sensor chip's thermal time constant. The integrated heater effectively controls the temperature profile and detraps flux in the sensor.},
keywords={},
doi={},
ISSN={},
month={July},}
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TY - JOUR
TI - A Method of Detrapping Magnetic Flux in a SQUID Sensor Using an Integrated Thin-Film Heater
T2 - IEICE TRANSACTIONS on Electronics
SP - 2029
EP - 2035
AU - Kohtaroh GOTOH
AU - Norio FUJIMAKI
AU - Takeshi IMAMURA
AU - Shinya HASUO
AU - Akihiro SHIBATOMI
PY - 1991
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E74-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 1991
AB - We produced a double-layer thin-film heater to detrap magnetic flux in a SQUID sensor. The heater is integrated on a sensor chip, and consists of a lower resistor layer and an upper superconducting layer to cancel the magnetic field produced by the heater current. The SQUID sensor is cooled below its critical temperature with a temperature gradient to detrap the flux completely. To make the gradient, we had to decrease heater power to zero over an interval exceeding 10-4 second in our experiment, which is almost equal to the sensor chip's thermal time constant. The integrated heater effectively controls the temperature profile and detraps flux in the sensor.
ER -
English
