Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/2848
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dc.contributor.authorRazmkhah, Sasan-
dc.contributor.authorBozbey, Ali-
dc.date.accessioned2019-12-25T14:03:42Z-
dc.date.available2019-12-25T14:03:42Z-
dc.date.issued2019
dc.identifier.citationRazmkhah, S., and Bozbey, A. (2019). Heat flux capacity measurement and improvement for the test of superconducting logic circuits in closed-cycle cryostats. Turkish Journal of Electrical Engineering and Computer Sciences, 27(5), 3912-3922.en_US
dc.identifier.issn1300-0632
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/337556-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/2848-
dc.identifier.urihttp://journals.tubitak.gov.tr/elektrik/issues/elk-19-27-5/elk-27-5-46-1903-164.pdf-
dc.description.abstractWith the current progress of superconducting integrated circuits, circuit complexities have reached more than 100,000 Josephson junctions. At the laboratory environment, circuit tests are generally being conducted at liquid Helium environments. With the commercialization of the superconducting integrated circuit-based systems and/or price increase of liquid Helium, utilization of the closed-cycle systems will be inevitable. Even though it is possible to implement closedcycle systems with quite substantial excess cooling powers after all the wirings and peripheral circuits, one point not to be overlooked is the power density at the superconducting chips. We have observed that the circuits designed for operation at liquid Helium bath have much higher power densities that exceed the heat flux capacities of closed-cycle cryocoolers. We have measured that the heat flux capacities of closed-cycle systems are about 0.1 W/cm(2) when the chip is in vacuum. Thus, if the power density in any of the bias resistors are higher than these values, it is difficult to keep the chip in superconducting state. With the positive feedback from a local hot spot under current bias, the chip rapidly heats up due to Joule heating. To increase the limit of power density, we propose an encapsulation method that increases the heat flux capacity of the system. With the encapsulation, the heat flux capacity of the system is increased to about 0.4 W/cm(2).en_US
dc.language.isoenen_US
dc.publisherTürkiye Kliniklerien_US
dc.relation.ispartofTurkish Journal of Electrical Engineering and Computer Sciencesen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSuperconductivityen_US
dc.subjectsingle flux quantumen_US
dc.subjectpower densityen_US
dc.subjectheat flux capacityen_US
dc.titleHeat flux capacity measurement and improvement for the test of superconducting logic circuits in closed-cycle cryostatsen_US
dc.typeArticleen_US
dc.departmentFaculties, Faculty of Engineering, Department of Electrical and Electronics Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümütr_TR
dc.identifier.volume27
dc.identifier.issue5
dc.identifier.startpage3912
dc.identifier.endpage3922
dc.relation.tubitak[114E099]en_US
dc.authorid0000-0003-2747-310X-
dc.identifier.wosWOS:000486425400046en_US
dc.identifier.scopus2-s2.0-85072656186en_US
dc.institutionauthorBozbey, Ali-
dc.identifier.doi10.3906/elk-1903-164-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopusqualityQ3-
dc.identifier.trdizinid337556en_US
item.cerifentitytypePublications-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeArticle-
item.fulltextNo Fulltext-
item.grantfulltextnone-
crisitem.author.dept02.5. Department of Electrical and Electronics Engineering-
crisitem.author.dept02.5. Department of Electrical and Electronics Engineering-
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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