Cryostat MAC series

• Operation in any orientation • Lightweight aluminum construction • Slimline detector/preamplifier configuration • Long holding time • Warm-up sensor-bias disable For applications requiring both portability and flexibility of use, the MAC (multi-attitude cryostat) is the answer. The unique fill and vent system employed by the MAC cryostat allows operation of the detector in any orientation without LN2 spillage even when the Dewar is full. The small size, lightweight, and ruggedness of the unit permit use of the unit in field conditions. The slimline detector chamber allows the unit to be shielded very effectively for use in low level counting applications. The MAC detector consists of a Dewar having two fill and vent ports arranged so that one of the ports is the vent, regardless of the Dewar's orientation. This allows the Dewar to be operated in the horizontal position, vertically uplooking, or vertically downlooking, without loss of LN2. A single port version of the MAC and Big MAC cryostat is available on special order. This version has half the capacity and holding time of the standard product. A gravity-feed supply Dewar/stand is available for the single port cryostat. The single port cryostat is compatible with other brands, and it holds LN2 in all orientations which may be important in some applications, e.g. for use in a submarine (see Mirion Model 7411). The detector/preamp includes a sensor which provides a signal when the LN2 is depleted. This output can be used to shut down the bias supply, to operate an alarm, or both.