Electromagnetic shield characteristics investigation for the calibration the NMR logging tool

Authors: A.S. Aleksandrov, R.R. Gazizulin, M.Yu. Zakharov, A.V. Klochkov, D.K. Nurgaliev, T.R. Safin (Kazan (Volga Region) Federal University, RF, Kazan)

Key words: magnetic shielding room, Faraday cage.
The problem of electromagnetic shielding is relevant due to increasing number of electronic devices that interact with each other. It is known that shield, which is made of high conductivity materials, is widely used for controlling electromagnetic noise. Due to development of NMR logging tool two shielding Faraday cages have been made. The aim of the work was determination the frequency transmittance dependence of shielding in range from 100 kHz to 100 MHz. Transmitting and receiving devices were developed for an experiment. As a result, constructed shields are suitable for tuning and calibration NMR logging tools.

References

1. Birg J., Newnes engineering science pocket book, Taylor & Francis, 2001,

560 p.

2. Ott H.W., Noise reduction techniques in electronic systems, Wiley & Sons, Incorporated,

1988, 363 p.

3. Bork J., Hahlbohm H., Klein R., Schnabel A., The 8-layered magnetically

shielded room of the PTB: Design and construction, Proceedings of the 12th

International Conference on Biomagnetism, 2000, pp. 970-973.

4. Meissner W., Ochsenfeld R., Ein neuer Effekt bei Eintritt der Supraleitfдhigkeit,

Naturwissenschaften, 1933, V. 21, pp. 787.

5. Cohen D., Schlapfer U., Ahlfors S., Hдmдlдinen M., Halgren E., New six-layer

magnetically-shielded room for MEG, Proceedings of the 13th International

Conference on Biomagnetism, 2002.

6. Shapiro D.N., Elektromagnitnoe ekranirovanie (Electromagnetic shielding),

Dolgoprudnyy: Intellekt, 2010, 79 p.

Key words: magnetic shielding room, Faraday cage.
The problem of electromagnetic shielding is relevant due to increasing number of electronic devices that interact with each other. It is known that shield, which is made of high conductivity materials, is widely used for controlling electromagnetic noise. Due to development of NMR logging tool two shielding Faraday cages have been made. The aim of the work was determination the frequency transmittance dependence of shielding in range from 100 kHz to 100 MHz. Transmitting and receiving devices were developed for an experiment. As a result, constructed shields are suitable for tuning and calibration NMR logging tools.

References

1. Birg J., Newnes engineering science pocket book, Taylor & Francis, 2001,

560 p.

2. Ott H.W., Noise reduction techniques in electronic systems, Wiley & Sons, Incorporated,

1988, 363 p.

3. Bork J., Hahlbohm H., Klein R., Schnabel A., The 8-layered magnetically

shielded room of the PTB: Design and construction, Proceedings of the 12th

International Conference on Biomagnetism, 2000, pp. 970-973.

4. Meissner W., Ochsenfeld R., Ein neuer Effekt bei Eintritt der Supraleitfдhigkeit,

Naturwissenschaften, 1933, V. 21, pp. 787.

5. Cohen D., Schlapfer U., Ahlfors S., Hдmдlдinen M., Halgren E., New six-layer

magnetically-shielded room for MEG, Proceedings of the 13th International

Conference on Biomagnetism, 2002.

6. Shapiro D.N., Elektromagnitnoe ekranirovanie (Electromagnetic shielding),

Dolgoprudnyy: Intellekt, 2010, 79 p.