Thermal Crosstalk Measurements and Simulations for an X-ray Microcalorimeter Array
| dc.contributor.author | Miniussi, Antoine R. | |
| dc.contributor.author | Adams, Joseph S. | |
| dc.contributor.author | Bandler, Simon R. | |
| dc.contributor.author | Beaumont, Sophie | |
| dc.contributor.author | Chang, Meng P. | |
| dc.contributor.author | Chervenak, James A. | |
| dc.contributor.author | Finkbeiner, Fred M. | |
| dc.contributor.author | Ha, Jong Y. | |
| dc.contributor.author | Hummatov, Ruslan | |
| dc.contributor.author | Kelley, Richard L. | |
| dc.contributor.author | Kilbourne, Caroline A. | |
| dc.contributor.author | Porter, Frederick S. | |
| dc.contributor.author | Sadleir, John E. | |
| dc.contributor.author | Sakai, Kazuhiro | |
| dc.contributor.author | Smith, Stephen J. | |
| dc.contributor.author | Wakeham, Nicholas A. | |
| dc.contributor.author | Wassell, Edward J. | |
| dc.date.accessioned | 2020-03-04T15:59:04Z | |
| dc.date.available | 2020-03-04T15:59:04Z | |
| dc.date.issued | 2020-01-18 | |
| dc.description.abstract | Arrays of high-density microcalorimeters require careful heat sinking in order to minimize the thermal crosstalk between nearby pixels. For the array of microcalorimeters developed for the Athena X-ray Integral Field Unit instrument, which has more than 3000 pixels on a 275 µm pitch, it is essential to address this problem in order to meet the energy-resolution requirements. The instrument’s energy-resolution budget requires that the impact of the thermal crosstalk on the energy resolution be a contribution that, added in quadrature to other energy-resolution contributions, is less than 0.2 eV. This value results in a derived requirement that the ratio between the amplitude of the crosstalk signal to an X-ray pulse (for example at 6 keV) is less than 1 × 10−3 (for the first neighbor), less than 4 × 10−4 (for the diagonal neighbor) and less than 8 × 10−5 (for the second nearest neighbor). We have measured the thermal crosstalk levels between pixels in various geometries and configurations. The results show a crosstalk ratio which is at least a factor of 4 lower than the derived requirement. We also developed a finite element (FEM) 2D thermal model to predict the thermal behavior of large-scale arrays. This model successfully simulates the measured data in terms of pulse amplitude and time constants. | en_US |
| dc.description.uri | https://link.springer.com/article/10.1007/s10909-019-02312-5 | en_US |
| dc.format.extent | 9 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2rqhc-cxqt | |
| dc.identifier.citation | Miniussi, A.R., Adams, J.S., Bandler, S.R. et al. Thermal Crosstalk Measurements and Simulations for an X-ray Microcalorimeter Array. J Low Temp Phys (2020). https://doi.org/10.1007/s10909-019-02312-5 | en_US |
| dc.identifier.uri | https://doi.org/10.1007/s10909-019-02312-5 | |
| dc.identifier.uri | http://hdl.handle.net/11603/17472 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Springer | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Thermal Crosstalk Measurements and Simulations for an X-ray Microcalorimeter Array | en_US |
| dc.type | Text | en_US |