| Article | |
| Title | Heat source localisation by trilateration of helium II second sound detected with transition edge sensors thermometry |
| Author(s) | Furci, H (CERN) ; Stegmaier, T (CERN) ; Koettig, T (CERN) ; Vandoni, G (CERN) |
| Publication | 2019 |
| Number of pages | 5 |
| In: | IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012115 |
| In: | 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012115 |
| DOI | 10.1088/1757-899x/502/1/012115 |
| Subject category | Accelerators and Storage Rings |
| Abstract | The detection of second sound in He-II can be exploited during superconducting cavity testing to locate the germ of a quench. The sudden appearance of a hotspot generates this wave in the helium II bath, which is routinely detected by Oscillating Superleak Transducers (OST) reacting to the first arrived inter-component velocity front. Recently, we have developed Transition Edge Sensors (TES) that are able to detect second sound by measuring directly the temperature fluctuation of second sound (below milli-Kelvin, in sub-millisecond time scale) with a good native signal-to-noise ratio. We present the current state of development of second sound detectors based on TES, experiments aiming to characterize more thoroughly their behaviour as second sound detectors by thermometry, and the capabilities they provide in terms of localisation of the heat source in the case of direct sight. |
| Copyright/License | CC-BY-3.0 |
Corresponding record in: Inspire
Datensatz erzeugt am 2022-07-26, letzte Änderung am 2022-07-26
