Multi-channel, multi-template event reconstruction for SuperCDMS data using machine learning
SuperCDMS SNOLAB uses kilogram-scale germanium and silicon detectors to search for dark matter. Each detector has Transition Edge Sensors (TESs) patterned on the top and bottom faces of a large crystal substrate, with the TESs electrically grouped into six phonon readout channels per face. Noise cor...
Salvato in:
| Autori principali: | , |
|---|---|
| Natura: | Article (Journal) |
| Lingua: | inglese |
| Pubblicazione: |
July 2026
|
| In: |
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
Year: 2026, Volume: 1087, Pages: 1-16 |
| ISSN: | 1872-9576 |
| DOI: | 10.1016/j.nima.2026.171437 |
| Accesso online: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.nima.2026.171437 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0168900226001634 
|
| Note sull'autore: | M.F. Albakry, I. Alkhatib, D. Alonso-González, J. Anczarski, T. Aralis, T. Aramaki, I. Ataee Langroudy, C. Bathurst, R. Bhattacharyya, A.J. Biffl, P.L. Brink, M. Buchanan, R. Bunker, B. Cabrera, R. Calkins, R.A. Cameron, C. Cartaro, D.G. Cerdeño, Y.-Y. Chang, M. Chaudhuri, J.-H. Chen, R. Chen, N. Chott, J. Cooley, H. Coombes, P. Cushman, R. Cyna, S. Das, S. Dharani, M.L. di Vacri, M.D. Diamond, M. Elwan, S. Fallows, E. Fascione, E. Figueroa-Feliciano, S.L. Franzen, A. Gevorgian, M. Ghaith, G. Godden, J. Golatkar, S.R. Golwala, R. Gualtieri, J. Hall, S.A.S. Harms, C. Hays, B.A. Hines, Z. Hong, L. Hsu, M.E. Huber, V. Iyer, V.K.S. Kashyap, S.T.D. Keller, M.H. Kelsey, K.T. Kennard, Z. Kromer, A. Kubik, N.A. Kurinsky, M. Lee, J. Leyva, B. Lichtenberg, J. Liu, Y. Liu, E. Lopez Asamar, P. Lukens, R. López Noé, D.B. MacFarlane, R. Mahapatra, J.S. Mammo, A.J. Mayer, P.C. McNamara, É. Michaud, E. Michielin, K. Mickelson, N. Mirabolfathi, M. Mirzakhani, B. Mohanty, D. Mondal, D. Monteiro, J. Nelson, H. Neog, J.L. Orrell, M.D. Osborne, S.M. Oser, L. Pandey, S. Pandey, R. Partridge, P.K. Patel, D.S. Pedreros, W. Peng, W.L. Perry, R. Podviianiuk, M. Potts, S.S. Poudel, A. Pradeep, M. Pyle, W. Rau, T. Reynolds, M. Rios, A. Roberts, A.E. Robinson, L. Rosado, J.L. Ryan, T. Saab, D. Sadek, B. Sadoulet, S.P. Sahoo, I. Saikia, S. Salehi, J. Sander, B. Sandoval, A. Sattari, R.W. Schnee, B. Serfass, A.E. Sharbaugh, R.S. Shenoy, A. Simchony, P. Sinervo, Z.J. Smith, R. Soni, K. Stifter, J. Street, M. Stukel, H. Sun, E. Tanner, N. Tenpas, D. Toback, A.N. Villano, J. Viol, B. von Krosigk, O. Wen, Z. Williams, M.J. Wilson, J. Winchell, S. Yellin, B.A. Young, B. Zatschler, S. Zatschler, A. Zaytsev, E. Zhang, L. Zheng, A. Zuniga, M.J. Zurowski |
| Riassunto: | SuperCDMS SNOLAB uses kilogram-scale germanium and silicon detectors to search for dark matter. Each detector has Transition Edge Sensors (TESs) patterned on the top and bottom faces of a large crystal substrate, with the TESs electrically grouped into six phonon readout channels per face. Noise correlations are expected among a detector’s readout channels, in part because the channels and their readout electronics are located in close proximity to one another. Moreover, owing to the large size of the detectors, energy deposits can produce vastly different phonon propagation patterns depending on their location in the substrate, resulting in a strong position dependence in the readout-channel pulse shapes. Both of these effects can degrade the energy resolution and consequently diminish the dark matter search sensitivity of the experiment if not accounted for properly. We present a new algorithm for pulse reconstruction, mathematically formulated to take into account correlated noise and pulse shape variations. This new algorithm fits N readout channels with a superposition of M pulse templates simultaneously - hence termed the N×M filter. We describe a method to derive the pulse templates using principal component analysis (PCA) and to extract energy and position information using a gradient boosted decision tree (GBDT). We show that these new N×M and GBDT analysis tools can reduce the impact from correlated noise sources while improving the reconstructed energy resolution. This improvement amounts to more than a factor of three for simulated mono-energetic events. For the 71Ge K-shell electron-capture peak recoils measured in a previous version of SuperCDMS called CDMSlite, the energy resolution is reduced to less than 50 eV, compared with the previously published value of ∼100eV. These results lay the groundwork for position reconstruction in SuperCDMS with the N×M outputs. |
|---|---|
| Descrizione del documento: | Online verfügbar: 4. März 2026, Artikelversion: 6. März 2026 Gesehen am 26.05.2026 |
| Descrizione fisica: | Online Resource |
| ISSN: | 1872-9576 |
| DOI: | 10.1016/j.nima.2026.171437 |