Description and Performance of the COSINUS remoTES Design
Abstract COSINUS is a new cryogenic observatory for rare event searches located in the Laboratori Nazionali del Gran Sasso in Italy. COSINUS’s first goal is to clarify whether the signal detected by the DAMA/LIBRA experiment originates from dark matter particle interactions or has a different nature. To this aim, sodium iodide (NaI) cryogenic scintillating calorimeters read out by transition edge sensors (TESs) are developed. To preserve the NaI crystal from the TES fabrication process, COSINUS implemented a novel design, the remoTES, where the TES is deposited on a separate wafer and coupled to the absorber through a Au-bonding wire and a Au-phonon collector. This design has reached baseline resolutions below 100 eV for Si, 200 eV for $$\hbox {TeO}_2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>TeO</mml:mtext> <mml:mn>2</mml:mn> </mml:msub> </mml:math> and 400 eV for NaI absorbers. These results show that the remoTES not only brings COSINUS close to its performance goal of 1 keV energy threshold, but also offers the possibility to employ delicate crystals previously excluded for cryogenic applications as absorbers and to avoid the exposure of the absorbers to the TES fabrication process. It therefore extends the choice of target materials of the rare event searches using TES. In this work, we will provide a detailed description of the remoTES design and present the results of the latest prototypes.
Authors
- A. Stendahl
- I. Dafinei (ORCID: https://orcid.org/0000-0002-8280-682X)
- Z. W. Ge (ORCID: https://orcid.org/0000-0001-8586-6134)
- Mariano Cababié (ORCID: https://orcid.org/0000-0002-9281-5375)
- S. Fichtinger
- F. Petricca
- V. Zema (ORCID: https://orcid.org/0000-0003-3566-0407)
- M. Stukel (ORCID: https://orcid.org/0000-0002-9052-7513)
- C. Schwertner
- Cesare Tresca (ORCID: https://orcid.org/0000-0002-9587-0513)
- K. Schäffner (ORCID: https://orcid.org/0000-0002-7928-6923)
- L. Pagnanini (ORCID: https://orcid.org/0000-0001-9498-5055)
- P. Schreiner (ORCID: https://orcid.org/0009-0001-8037-4242)
- F. Reindl (ORCID: https://orcid.org/0000-0003-0151-2174)
- Matti Heikinheimo (ORCID: https://orcid.org/0000-0003-0905-0488)
- F. Wagner (ORCID: https://orcid.org/0000-0001-5687-6392)
- M. Stahlberg
- L. Einfalt
- M. Mancuso
- Y. Zhu (ORCID: https://orcid.org/0000-0001-5439-4277)
- Martin Hughes (ORCID: https://orcid.org/0000-0003-1748-0832)
- D. Schmiedmayer
- G. Angloher
- A. Filipponi (ORCID: https://orcid.org/0000-0002-3870-5853)
- Shijing Yue (ORCID: https://orcid.org/0000-0002-9155-488X)
- G. Profeta (ORCID: https://orcid.org/0000-0002-0535-7573)
- R Mukund
- J. Schieck (ORCID: https://orcid.org/0000-0002-1058-8093)
- F. Pröbst (ORCID: https://orcid.org/0000-0002-0856-253X)
- K. Shera (ORCID: https://orcid.org/0009-0002-9119-6899)
- N. Di Marco (ORCID: https://orcid.org/0000-0003-1723-7613)
- M. Friedl (ORCID: https://orcid.org/0000-0002-7420-2559)
- S. Pirro (ORCID: https://orcid.org/0000-0001-5160-7396)
- Katri Huitu (ORCID: https://orcid.org/0000-0002-7754-9320)
- Moritz Kellermann (ORCID: https://orcid.org/0009-0004-5271-0378)
- F. Ferroni
- A Puiu
- T. Frank
- R. Maji
Institutions
- University of Helsinki (FI)
- TU Wien (AT)
- University of L'Aquila (IT)
- Helsinki Institute of Physics (FI)
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso (IT)
- Max Planck Institute for Physics (DE)
- Institute of High Energy Physics (AT)
- Gran Sasso Science Institute (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT)
- Shanghai Institute of Ceramics (CN)
Publication Details
- Journal
- Journal of Low Temperature Physics
- Published
- 2024-08-31
- DOI
- https://doi.org/10.1007/s10909-024-03201-2
- Primary Topic
- Dark Matter and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Academy of Finland
- Austrian Science Fund
- Österreichische Forschungsförderungsgesellschaft
- Väisälän Rahasto