2025-02-11 アルゴンヌ国立研究所 (ANL)
Close-up view of a SNSPD mounted on a printed circuit board inside the cryostat at the Fermilab Test Beam Facility. This device was used in the first successful demonstration of high-energy proton detection using SNSPDs. (Image by Sangbaek Lee/Argonne National Laboratory.)
＜関連情報＞
- https://www.anl.gov/article/from-photons-to-protons-argonne-team-makes-breakthrough-in-highenergy-particle-detection
- https://www.sciencedirect.com/science/article/abs/pii/S0168900224008829?via%3Dihub
120GeV陽子によるSNSPDのビーム試験 Beam tests of SNSPDs with 120 GeV protons
Sangbaek Lee, Tomas Polakovic, Whitney Armstrong, Alan Dibos, Timothy Draher, Nathaniel Pastika, Zein-Eddine Meziani, Valentine Novosad
Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Available online :9 October 2024
DOI:https://doi.org/10.1016/j.nima.2024.169956
Abstract
We report the test results for a 120 GeV proton beam incident on superconducting nanowire particle detectors of various wire sizes. NbN devices with the same sensitive area were fabricated with different wire widths and tested at a temperature of 2.82 K. The relative detection efficiency was extracted from bias current scans for each device. The results show that the wire width is a critical factor in determining the detection efficiency and larger wire widths than 400 nm leads to inefficiencies at low bias currents. These results are particularly relevant for novel applications at accelerator facilities, such as the Electron-Ion Collider, where cryogenic cooling is readily available.
