AN APPARATUS AND A METHOD FOR HELIUM COLLECTION AND RELIQUEFACTION IN A MAGNETOENCEPHALOGRAPHY MEASUREMENT DEVICE

The invention relates to a method and a magnetoencephalography (MEG) measurement device. In the method there is determined the ending of a scheduled inactivity period of the MEG device. At the ending of the inactivity period a cryocooler of the MEG device is switched off. Helium is allowed to boil i...

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Bibliographische Detailangaben
Hauptverfasser:	LAINE, Pasi Petteri, AHONEN, Antti, BLAAUWGEERS, Rob, LÄHTEENMÄKI, Sami Antero
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS DIAGNOSIS ELECTRICITY FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS HEAT PUMP SYSTEMS HEATING HUMAN NECESSITIES HYGIENE IDENTIFICATION INDUCTANCES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MAGNETS MANUFACTURE OR STORAGE OF ICE MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE PHYSICS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES STORING OF DISTRIBUTING GASES OR LIQUIDS SURGERY TESTING TRANSFORMERS VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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