Design evaluation of serial and parallel sub-mK continuous nuclear demagnetization refrigerators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10424142" target="_blank" >RIV/00216208:11320/20:10424142 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=eMj90GKdrP" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=eMj90GKdrP</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cryogenics.2020.103119" target="_blank" >10.1016/j.cryogenics.2020.103119</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Design evaluation of serial and parallel sub-mK continuous nuclear demagnetization refrigerators

Popis výsledku v původním jazyce

We present the evaluation of two different design configurations of a two-stage PrNi5 continuous nuclear demagnetization refrigerator. Serial and parallel configurations of the two stages are considered, with emphasis on the attainable cooling power at sub-mK temperatures and the impact of the design choices on the operation of the refrigerator. Numerical simulations of heat transfer in the setup are used to evaluate the performance of the refrigerator as well as the technological requirements for the essential thermal links. In accord with similar findings for adiabatic demagnetization refrigerators (Shirron, 2014), our simulations show that the performance of both configurations improves as the thermal links improve, and that the parallel configuration yields a higher cooling power than the series design for a given thermal link resistance and sample temperature.

Název v anglickém jazyce

Design evaluation of serial and parallel sub-mK continuous nuclear demagnetization refrigerators

Popis výsledku anglicky

We present the evaluation of two different design configurations of a two-stage PrNi5 continuous nuclear demagnetization refrigerator. Serial and parallel configurations of the two stages are considered, with emphasis on the attainable cooling power at sub-mK temperatures and the impact of the design choices on the operation of the refrigerator. Numerical simulations of heat transfer in the setup are used to evaluate the performance of the refrigerator as well as the technological requirements for the essential thermal links. In accord with similar findings for adiabatic demagnetization refrigerators (Shirron, 2014), our simulations show that the performance of both configurations improves as the thermal links improve, and that the parallel configuration yields a higher cooling power than the series design for a given thermal link resistance and sample temperature.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GJ20-13001Y" target="_blank" >GJ20-13001Y: Kvantová turbulence s nanometrickým rozlišením</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Cryogenics

ISSN

0011-2275

e-ISSN

—

Svazek periodika

110

Číslo periodika v rámci svazku

SEP 2020

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

103119

Kód UT WoS článku

000570247900014

EID výsledku v databázi Scopus

2-s2.0-85087932279