Superconducting NbSi thermometers for use in TES devices

We present here preliminary results for superconducting NbSi thermometers to be used in TES devices. These thermometers are being made by the CSNSM/IN2P3 in Orsay, France, in parallel to resistive NbSi thermometers, a more common use for this alloy. The critical temperature of these devices is easily tuneable. We present here devices operated and tested at 300 mK using a 3He fridge.