CRYOGENIC SYSTEM AND CONTROL METHOD FOR CRYOGENIC SYSTEM
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Dec 17, 2024
filing date -
Dec 17, 2024
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Abstract
A cryogenic system includes a cryocooler and a controller. The cryocooler includes a first cylinder, a second cylinder including a heat absorbing portion, a first temperature sensor measuring a first measurement temperature, a second temperature sensor measuring a second measurement temperature, and a third temperature sensor measuring a third measurement temperature. The controller is configured to acquire a first measurement temperature from the first temperature sensor, a second measurement temperature from the second temperature sensor, and a third measurement temperature from the third temperature sensor, to set an upper limit temperature of the heat absorbing portion, based on the first measurement temperature, the second measurement temperature, and an axial position of the heat absorbing portion, and to control the heat source such that the third measurement temperature is equal to or lower than the upper limit temperature of the heat absorbing portion.
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