The 20th International Conference on Low Temperature Detectors (LTD20)
Presentation Code : MP-006
Presentation Schedule: : July 24, 18:45 ~ 21:00

Description and Performance of the COSINUS remoTES Design

Vanessa Zema1, The COSINUS Collaboration1,2,3,4,5,6,7,8,9
1Max Planck Institute for Physics, Germany, 2Atominstitut, Technische Universität Wien, Austria, 3Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Italy, 4Gran Sasso Science Institute, Italy, 5Helsinki Institute of Physics, University of Helsinki, Finland, 6INFN - Laboratori Nazionali del Gran Sasso, Italy, 7INFN - Sezione di Roma, Italy, 8Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, Austria, 9SICCAS - Shanghai Institute of Ceramics, China

COSINUS is a new cryogenic observatory for rare event searches located in the National Laboratory of Gran Sasso, in Italy. COSINUS 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, NaI cryogenic scintillating calorimeters are developed and read out with transition edge sensors. The novel remoTES design, based on gold phonon collectors and implemented to preserve NaI from the TES fabrication processes, has reached baseline resolutions below 100 eV, 200 eV and 400 eV for Si, TeO2 and NaI absorbers, respectively. 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 as absorbers delicate crystals previously excluded for cryogenics applications. It therefore extends the choice of target materials of the rare events searches using TES. In this talk, we will provide a detailed description of the remoTES design and present the results of the latest prototypes.

• Presentation Preference : Oral
• Topic : A. Detector Physics & Technologies
- 06. TES
• Corresponding Author : Vanessa Zema (Max Planck Institute for Physics)
• Presenter : Vanessa Zema (Max Planck Institute for Physics)