The invention relates to a probe (110, 210, 310, 410, 510) which has a sealed cooling chamber (140, 240, 340, 440, 540) and is disposed within a casing (112, 212, 312, 412, 512) of the probe. An interface unit (124, 224, 324, 424, 524) of the probe is at least partially arranged in the cooling chamber or in contact with the cooling chamber. The cooling chamber is at least partially filled with a heat transfer liquid (142, 242, 342, 442, 542).
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