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Thesis - Department of Physics - University of Oxford

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0<br />

0.026<br />

Normalised SQUID output [mV]<br />

-0.05<br />

-0.1<br />

-0.15<br />

-0.2<br />

-0.25<br />

-0.3<br />

0.024<br />

0.022<br />

0.020<br />

0.018<br />

0.016<br />

SQUID output [V]<br />

-0.35<br />

0.014<br />

0 2 4 6 8 10 12<br />

Time [hours]<br />

ÙÖ º½ Ì ËÉÍÁ ×Ý×ØÑ ÖÙÒÒÒ ÛØÓÙØ ­ÙÜ ÙÑÔ× ÓÖ ÓÚÖ ØÛÐÚ<br />

ÓÙÖ׺<br />

ÐÙÜ ÕÙÒØÙÑ Ò ÓØÖ ÙÑÔ×<br />

ÙÒÑÒØÐ ÔÖÓÐÑ ÛØ Ù×Ò ËÉÍÁ× × ØØ ØÝ ÛÐÐ Ó×ÓÒÐ<br />

ÙÑÔ³ ­ÙÜ ÕÙÒØÙѺ Ì ×ÐÒ ×Ø× Ý ÚÐÙ ÕÙÚÐÒØ ØÓÒ<br />

Ò ­ÙÜ Ó Ò¨¼º ÌÓ ÚÓ Ø× Ø × Ò××ÖÝ ØÓ Ò×ÙÖ ØØ ÒÓ ×ÒÐ ÓÖ ÒÓ×<br />

Ò Ø ËÉÍÁ ÒÔÙØ Ü× Ø ×ÐÛ Öغ Ì× Ò ÓÒ Ù×Ò ¬ÐØÖ× Ò<br />

×ÐÒº ÁÒ ×ÙØÐ ÒÚÖÓÒÑÒØ ËÉÍÁ Ò ÖÙÒ ÛØÓÙØ ÒÝ ÙÑÔ×<br />

ÓÖ ÓÚÖ ½¾ ÓÙÖ׺ Ì× × ×ÓÛÒ Ò ¬ÙÖ º½º<br />

Ð×× ÛÐÐ ÙÒÖ×ØÓÓ ÔÖÓÐÑ × ×ÓÛÒ Ò ¬ÙÖ º½º<br />

Ì ËÉÍÁ<br />

×ÐÒ ÙÑÔ× Ø ×ÚÖÐ ÔÓÒØ׸ ÙØ Ø ÑÒØÙ Ó Ø× ÙÑÔ× × ÑÙ<br />

Ð×× ØÒ ½¨¼º ËÑÐÖ ÚÓÙÖ Û× ×Ò Ò ÓØÖ ÜÔÖÑÒØ× Ò ÓØÖ<br />

ËÉÍÁ׺ Ì ÑÒØÙ Ó Ø ÙÑÔ× ÚÖ ÓÒ×ÖÐݸ Ò Û× ×Óѹ<br />

½¿

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