Development of metallic magnetic calorimetersusing miniature SQUID susceptometers #F05

MMC needs stable magnetic field

Persistent field current on chip

• Charging the on-chip persistent current– Applying current to the on-chip field coil

→ maximum 10 G– Using magnetic field from external persistent loop

→ maximum 20 G• Heater operation

– Heater on part of the on-chip persistent loop– Current pulse on SQUID junctions

Development of metallic magnetic calorimetersusing miniature SQUID susceptometers #F05

X-ray pulse from 55Fe

Au:ErOn-chipfield coil