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remoTES: A new design for the cryogenic NaI detectors of the COSINUS experiment
by L. Einfalt, G. Angloher, M.R. Bharadwaj, I. Dafinei, N. Di Marco, F. Ferroni, S. Fichtinger, A. Filipponi, T. Frank, M. Friedl, A. Fuss, Z. Ge, M. Heikinheimo, K. Huitu, M. Kellermann, R. Maji , M. Mancuso, L. Pagnanini, F. Petricca, S. Pirro, F. Pröbst, G. Profeta, A. Puiu, F. Reindl, K. Schäffner, J. Schieck, D. Schmiedmayer, C. Schwertner, M. Stahlberg, A. Stendahl, M. Stukel , F. Wagner, S. Yue, V. Zema, Y. Zhu
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Submission summary
| Authors (as registered SciPost users): | Leonie Einfalt |
| Submission information | |
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| Preprint Link: | scipost_202210_00017v1 (pdf) |
| Date submitted: | 2022-10-03 12:08 |
| Submitted by: | Einfalt, Leonie |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 14th International Conference on Identification of Dark Matter (IDM2022) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
The increasing statistical significance of the DAMA/LIBRA annual modulation signal is a cause for tension in the field of dark matter direct detection. The COSINUS experiment aims at a model-independent cross check of the DAMA/LIBRA signal claim, using NaI crystals operated as cryogenic scintillating calorimeters at mili-Kelvin temperatures. Such a setup enables measurement of phonon and scintillation light signals via Transition Edge Sensors (TESs) and allows particle discrimination on an event-by-event basis. The non-standard properties of NaI cause an obstacle when attaching a TES directly onto the surface of the crystal. This can be overcome with the “remoTES” design, where the TES is attached to an external wafer crystal. We present the results from a first successful operation of NaI and other crystals as cryogenic calorimeters with the remoTES design.
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Reports on this Submission
Anonymous Report 1 on 2022-11-6 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202210_00017v1, delivered 2022-11-06, doi: 10.21468/SciPost.Report.6062
Weaknesses
Some typos, which can be fixed during post processing.
Report
In this proceeding author describes a new design “remoTES”, which will allow COSINUS collaboration potentially realise a cryogenic experiment with hygroscopic NaI crystal. The design was tested with 3 types of absorbers with small mass and proved to be working. I wish authors to reproduce and improved this results crystals planned to use in the scientific run.
The manuscript is clearly written and well organised. It is also suitably formatted for publication.
I recommend the manuscript for publication as it is.