학술논문
Energy Calibration of High-Resolution X-Ray TES Microcalorimeters With 3 eV Optical Photons
Document Type
Periodical
Author
Jaeckel, F.T.; Ambarish, C.V.; Christensen, N.; Gruenke, R.; Hu, L.; McCammon, D.; McPheron, M.; Meyer, M.; Nelms, K.L.; Roy, A.; Wulf, D.; Zhang, S.; Zhou, Y.; Adams, J.S.; Bandler, S.R.; Chervenak, J.A.; Datesman, A.M.; Eckart, M.E.; Ewin, A.J.; Finkbeiner, F.M.; Kelley, R.; Kilbourne, C.A.; Miniussi, A.R.; Porter, F.S.; Sadleir, J.E.; Sakai, K.; Smith, S.J.; Wakeham, N.; Wassell, E.; Yoon, W.; Morgan, K.M.; Schmidt, D.R.; Swetz, D.S.; Ullom, J.N.
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 29(5):1-4 Aug, 2019
Subject
Language
ISSN
1051-8223
1558-2515
2378-7074
1558-2515
2378-7074
Abstract
With the improving energy resolution of transition-edge sensor (TES) based microcalorimeters, performance verification and calibration of these detectors have become increasingly challenging, especially in the energy range below 1 keV where fluorescent atomic X-ray lines have linewidths that are wider than the detector energy resolution and require impractically high statistics to determine the gain and deconvolve the instrumental profile. Better behaved calibration sources such as grating monochromators are too cumbersome for space missions and are difficult to use in the lab. As an alternative, we are exploring the use of pulses of 3 eV optical photons delivered by an optical fiber to generate combs of known energies with known arrival times. Here, we discuss initial results of this technique obtained with 2 and 0.7 eV resolution X-ray microcalorimeters. With the 2 eV detector, we have achieved photon number resolution for pulses with mean photon number up to 133 (corresponding to 0.4 keV).