Abstract
We developed and deployed a simple add-on multi-temperature calibrator for our multicolor transition edge sensor (TES) bolometer camera aimed at simultaneous observation with observing wavelengths of 1.1 and 0.85 mm. To cover the power loading level from the atmospheric emission corresponding to precipitable water vapor (PWV) of 0.5–4 mm, the calibrator consists of spherical mirrors to show the low-temperature stages of the cryostat and filters with moderate opacity to mimic the eight-temperature cold blackbodies. The loading powers introduced by each filter were self-calibrated by measuring the load curves of the TES bolometers when a filter was placed in front of the cryostat window. Each science observation was preceded by the calibration process, which measures the response of the TES bolometers to the atmosphere and filters of various opacities. Then, the responsivities of TES bolometers were derived to convert their output signal to the loading power and correct for the nonlinearity inherent in its response. Furthermore, the loading power falling on the TES bolometers from atmospheric emission measured at various PWV was in good correlation with the PWV measured with the radiometer, which enables the atmospheric extinction correction by fast and sensitive bolometers compared to the available radiometers with the modest sampling speeds.
Similar content being viewed by others
References
T. Takekoshi, S. Minamidani, T. Nakatsubo, T. Oshima, M. Kawamura, H. Matsuo, T. Sato, N.W. Halverson, A.T. Lee, W.L. Holzapfel, Y. Tamura, A. Hirota, K. Suzuki, T. Izumi, K. Sorai, K. Kohno, R. Kawabe, IEEE Trans. Terahertz Sci. Technol. 2(6), 584 (2012). https://doi.org/10.1109/TTHZ.2012.2218102
A. Hirota, B. Westbrook, K. Suzuki, T. Izumi, T. Takekoshi, T. Sato, T. Oshima, T. Minamidani, M. Kawamura, A. Suzuki, A.T. Lee, W.L. Holzapfel, K. Kohno, R. Kawabe, IEEE Trans. Appl. Supercond. 23(3), 2101305 (2013). https://doi.org/10.1109/TASC.2013.2247791
T. Oshima, M. Kawamura, B. Westbrook, T. Sato, A. Suzuki, T. Takekoshi, K. Suzuki, T. Minamidani, A. Hirota, T. Izumi, A.T. Lee, W.L. Holzapfel, K. Kohno, R. Kawabe, IEEE Trans. Appl. Supercond. 23(3), 2101004 (2013). https://doi.org/10.1109/TASC.2013.2240751
T. Takekoshi, K. Ohtawara, T. Oshima, S. Ishii, N. Izumi, T. Izumi, M. Yamaguchi, S. Suzuki, K. Muraoka, A. Hirota, F. Saito, S. Nakatsubo, A. Kouchi, T. Ito, K. Uemizu, Y. Fujii, Y. Tamura, K. Kohno, R. Kawabe, J. Low Temp. Phys. (2018). https://doi.org/10.1007/s10909-018-1916-1
Y. Tamura, R. Kawabe, K. Kohno, M. Fukuhara, M. Momose, H. Ezawa, A. Kuboi, T. Sekiguchi, T. Kamazaki, B. Vila-Vilaró, Y. Nakagawa, N. Okada, Publ. Astron. Soc. Jpn. 63, 347 (2011)
P. Scott, The am atmospheric model (v. 9.2). https://doi.org/10.5281/zenodo.438726
H. Ezawa, R. Kawabe, K. Kohno, S. Yamamoto, Proc. SPIE 5489, 763 (2004). https://doi.org/10.1117/12.551391
H. Ezawa, K. Kohno, R. Kawabe, S. Yamamoto, H. Inoue, H. Iwashita, H. Matsuo, T. Okuda, T. Oshima, T. Sakai, K. Tanaka, N. Yamaguchi, G.W. Wilson, M.S. Yun, I. Aretxaga, D. Hughes, J. Austermann, T.A. Perera, K.S. Scott, L. Bronfman, J.R. Cortés, The ASTE team, in Proceedings of the SPIE, vol. 7012, pp. 701208 (2008). https://doi.org/10.1117/12.789652
Acknowledgements
We would like to thank Shigeru Fuji, Nobeyama Radio Observatory, NAOJ, NINS for development of the instrument. This study was carried out under the Joint Research Program of the Institute of Low Temperature Science, Hokkaido University. This work was supported by the MEXT KAKENHI Grant Number JP20001003 and the JSPS KAKENHI Grant Numbers JP25247019, JP17H06130, and JP17H02872.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Oshima, T., Ohtawara, K., Takekoshi, T. et al. Development of Multi-temperature Calibrator for the TES Bolometer Camera: Deployment at ASTE. J Low Temp Phys 193, 996–1002 (2018). https://doi.org/10.1007/s10909-018-2009-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10909-018-2009-x