학술논문
Absolute Energy Measurements with Superconducting Transition-Edge Sensors for Muonic X-ray Spectroscopy at 44 keV
Document Type
Working Paper
Author
Yan, Daikang; Weber, Joel C.; Guruswamy, Tejas; Morgan, Kelsey M.; O'Neil, Galen C.; Wessels, Abigail L.; Bennett, Douglas A.; Pappas, Christine G.; Mates, John A.; Gard, Johnathon D.; Becker, Daniel T.; Fowler, Joseph W.; Swetz, Daniel S.; Schmidt, Daniel R.; Ullom, Joel N.; Okumura, Takuma; Isobe, Tadaaki; Azuma, Toshiyuki; Okada, Shinji; Yamada, Shinya; Hashimoto, Tadashi; Quaranta, Orlando; Miceli, Antonino; Gades, Lisa M.; Patel, Umeshkumar M.; Paul, Nancy; Bian, Guojie; Indelicato, Paul
Source
Subject
Language
Abstract
Superconducting transition-edge sensor (TES) microcalorimeters have great utility in x-ray applications owing to their high energy resolution, good collecting efficiency and the feasibility of being multiplexed into large arrays. In this work, we develop hard x-ray TESs to measure the absolute energies of muonic-argon ($\mu$-Ar) transition lines around 44 keV and 20 keV. TESs with sidecar absorbers of different heat capacities were fabricated and characterized for their energy resolution and calibration uncertainty. We achieved ~ 1 eV absolute energy measurement accuracy at 44 keV, and < 12 eV energy resolution at 17.5 keV.