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Your search keyword '"McMahon, J."' showing total 28 results
Start Over Author "McMahon, J." Journal journal of low temperature physics
28 results on '"McMahon, J."'

5. The Experiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM)

Author

Ade, P. A. R., Anderson, C. J., Barrentine, E. M., Bellis, N. G., Bolatto, A. D., Breysse, P. C., Bulcha, B. T., Cataldo, G., Connors, J. A., Cursey, P. W., Ehsan, N., Grant, H. C., Essinger-Hileman, T. M., Hess, L. A., Kimball, M. O., Kogut, A. J., Lamb, A. D., Lowe, L. N., Mauskopf, P. D., McMahon, J., Mirzaei, M., Moseley, S. H., Mugge-Durum, J. W., Noroozian, O., Pen, U., Pullen, A. R., Rodriguez, S., Shirron, P. J., Somerville, R. S., Stevenson, T. R., Switzer, E. R., Tucker, C., Visbal, E., Volpert, C. G., Wollack, E. J., and Yang, S.

Published
2020
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7. The Advanced ACTPol 27/39 GHz Array

Author

Simon, S. M., Beall, J. A., Cothard, N. F., Duff, S. M., Gallardo, P. A., Ho, S. P., Hubmayr, J., Koopman, B. J., McMahon, J. J., Nati, F., Niemack, M. D., Staggs, S. T., Vavagiakis, E. M., and Wollack, E. J.

Published
2018
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11. Advanced ACTPol Cryogenic Detector Arrays and Readout

Author

Henderson, S. W., Allison, R., Austermann, J., Baildon, T., Battaglia, N., Beall, J. A., Becker, D., De Bernardis, F., Bond, J. R., Calabrese, E., Choi, S. K., Coughlin, K. P., Crowley, K. T., Datta, R., Devlin, M. J., Duff, S. M., Dunkley, J., Dünner, R., van Engelen, A., Gallardo, P. A., Grace, E., Hasselfield, M., Hills, F., Hilton, G. C., Hincks, A. D., Hloẑek, R., Ho, S. P., Hubmayr, J., Huffenberger, K., Hughes, J. P., Irwin, K. D., Koopman, B. J., Kosowsky, A. B., Li, D., McMahon, J., Munson, C., Nati, F., Newburgh, L., Niemack, M. D., Niraula, P., Page, L. A., Pappas, C. G., Salatino, M., Schillaci, A., Schmitt, B. L., Sehgal, N., Sherwin, B. D., Sievers, J. L., Simon, S. M., Spergel, D. N., Staggs, S. T., Stevens, J. R., Thornton, R., Van Lanen, J., Vavagiakis, E. M., Ward, J. T., and Wollack, E. J.

Published
2016
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12. The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance

Author

Ho, S. P., Pappas, C. G., Austermann, J., Beall, J. A., Becker, D., Choi, S. K., Datta, R., Duff, S. M., Gallardo, P. A., Grace, E., Hasselfield, M., Henderson, S. W., Hilton, G. C., Hubmayr, J., Koopman, B. J., Lanen, J. V., Li, D., McMahon, J., Nati, F., Niemack, M. D., Niraula, P., Salatino, M., Schillaci, A., Schmitt, B. L., Simon, S. M., Staggs, S. T., Stevens, J. R., Ward, J. T., Wollack, E. J., and Vavagiakis, E. M.

Published
2016
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13. Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope

Author

Datta, R., Austermann, J., Beall, J. A., Becker, D., Coughlin, K. P., Duff, S. M., Gallardo, P. A., Grace, E., Hasselfield, M., Henderson, S. W., Hilton, G. C., Ho, S. P., Hubmayr, J., Koopman, B. J., Lanen, J. V., Li, D., McMahon, J., Munson, C. D., Nati, F., Niemack, M. D., Page, L., Pappas, C. G., Salatino, M., Schmitt, B. L., Schillaci, A., Simon, S. M., Staggs, S. T., Stevens, J. R., Vavagiakis, E. M., Ward, J. T., and Wollack, E. J.

Published
2016
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14. Development of a Microwave SQUID-Multiplexed TES Array for MUSTANG-2

Author

Stanchfield, S. M., Ade, P. A. R., Aguirre, J., Brevik, J. A., Cho, H. M., Datta, R., Devlin, M. J., Dicker, S. R., Dober, B., Egan, D., Ford, P., Hilton, G., Hubmayr, J., Irwin, K. D., Marganian, P., Mason, B. S., Mates, J. A. B., McMahon, J., Mello, M., Mroczkowski, T., Romero, C., Tucker, C., Vale, L., White, S., Whitehead, M., and Young, A. H.

Published
2016
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15. High-Density Superconducting Cables for Advanced ACTPol

Author

Pappas, C. G., Austermann, J., Beall, J. A., Duff, S. M., Gallardo, P. A., Grace, E., Henderson, S. W., Ho, S. P., Koopman, B. J., Li, D., McMahon, J., Nati, F., Niemack, M. D., Niraula, P., Salatino, M., Schillaci, A., Schmitt, B. L., Simon, S. M., Staggs, S. T., Stevens, J. R., Vavagiakis, E. M., Ward, J. T., and Wollack, E. J.

Published
2016
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20. A Study of Al–Mn Transition Edge Sensor Engineering for Stability

Author

George, E. M., Austermann, J. E., Beall, J. A., Becker, D., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H.-M., Crites, A. T., Dobbs, M. A., Everett, W., Halverson, N. W., Henning, J. W., Hilton, G. C., Holzapfel, W. L., Hubmayr, J., Irwin, K. D., Li, D., Lueker, M., McMahon, J. J., Mehl, J., Montgomery, J., Natoli, T., Nibarger, J. P., Niemack, M. D., Novosad, V., Ruhl, J. E., Sayre, J. T., Shirokoff, E., Story, K. T., Wang, G., Yefremenko, V., Yoon, K. W., and Young, E.

Published
2014
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21. Optical and Thermal Properties of ANL/KICP Polarization Sensitive Bolometers for SPTpol

Author

Chang, C. L., Ade, P., Aird, K., Austermann, J., Beall, J., Becker, D., Benson, B., Bleem, L., Britton, J., Carlstrom, J., Cho, H., de Haan, T., Crawford, T., Crites, A., Datesman, A., Dobbs, M., Everett, W., Ewall-Wice, A., George, E., Halverson, N., Harrington, N., Henning, J., Hilton, G., Holzapfel, W., Hoover, S., Hubmayr, J., Irwin, K., Keisler, R., Kennedy, J., Lee, A., Leitch, E., Li, D., Lueker, M., Marrone, D. P., Mcmahon, J., Mehl, J., Meyer, S., Montgomery, J., Montroy, T., Natoli, T., Nibarger, J., Niemack, M., Novosad, V., Padin, S., Pryke, C., Reichardt, C., Ruhl, J., Saliwanchik, B., Sayre, J., Schafer, K., Shirokoff, E., Story, K., Vanderlinde, K., Vieira, J., Wang, G., Williamson, R., Yefremenko, V., Yoon, K. W., and Young, E.

Published
2012
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23. An Overview of the SPTpol Experiment

Author

Bleem, L., Ade, P., Aird, K., Austermann, J., Beall, J., Becker, D., Benson, B., Britton, J., Carlstrom, J., Chang, C. L., Cho, H., de Haan, T., Crawford, T., Crites, A., Datesman, A., Dobbs, M., Everett, W., Ewall-Wice, A., George, E., Halverson, N., Harrington, N., Henning, J., Hilton, G., Holzapfel, W., Hoover, S., Hubmayr, J., Irwin, K., Keisler, R., Kennedy, J., Lee, A., Leitch, E., Li, D., Lueker, M., Marrone, D. P., McMahon, J., Mehl, J., Meyer, S., Montgomery, J., Montroy, T., Natoli, T., Nibarger, J., Niemack, M., Novosad, V., Padin, S., Pryke, C., Reichardt, C., Ruhl, J., Saliwanchik, B., Sayre, J., Schafer, K., Shirokoff, E., Story, K., Vanderlinde, K., Vieira, J., Wang, G., Williamson, R., Yefremenko, V., Yoon, K. W., and Young, E.

Published
2012
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25. An All Silicon Feedhorn-Coupled Focal Plane for Cosmic Microwave Background Polarimetry

Author

Hubmayr, J., Appel, J. W., Austermann, J. E., Beall, J. A., Becker, D., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H. M., Crites, A. T., Essinger-Hileman, T., Fox, A., George, E. M., Halverson, N. W., Harrington, N. L., Henning, J. W., Hilton, G. C., Holzapfel, W. L., Irwin, K. D., Lee, A. T., Li, D., McMahon, J., Mehl, J., Natoli, T., Niemack, M. D., Newburgh, L. B., Nibarger, J. P., Parker, L. P., Schmitt, B. L., Staggs, S. T., Van Lanen, J., Wollack, E. J., and Yoon, K. W.

Published
2012
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26. An All Silicon Feedhorn-Coupled Focal Plane for Cosmic Microwave Background Polarimetry

Author

Hubmayr, J., primary, Appel, J. W., additional, Austermann, J. E., additional, Beall, J. A., additional, Becker, D., additional, Benson, B. A., additional, Bleem, L. E., additional, Carlstrom, J. E., additional, Chang, C. L., additional, Cho, H. M., additional, Crites, A. T., additional, Essinger-Hileman, T., additional, Fox, A., additional, George, E. M., additional, Halverson, N. W., additional, Harrington, N. L., additional, Henning, J. W., additional, Hilton, G. C., additional, Holzapfel, W. L., additional, Irwin, K. D., additional, Lee, A. T., additional, Li, D., additional, McMahon, J., additional, Mehl, J., additional, Natoli, T., additional, Niemack, M. D., additional, Newburgh, L. B., additional, Nibarger, J. P., additional, Parker, L. P., additional, Schmitt, B. L., additional, Staggs, S. T., additional, Van Lanen, J., additional, Wollack, E. J., additional, and Yoon, K. W., additional

Published
2011
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27. The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance

Author

Christine G. Pappas, Benjamin L. Schmitt, Jeffrey L. Van Lanen, Maria Salatino, Shawn W. Henderson, Brian J. Koopman, Jeff McMahon, Shannon M. Duff, Emily Grace, Sara M. Simon, Suzanne T. Staggs, Dan Becker, J. Austermann, Johannes Hubmayr, Patricio A. Gallardo, Prajwal Niraula, S. P. Ho, Matthew Hasselfield, Alessandro Schillaci, Eve M. Vavagiakis, Dale Li, Edward J. Wollack, Steve K. Choi, Gene C. Hilton, Jason R. Stevens, Federico Nati, Rahul Datta, Michael D. Niemack, Jonathan T. Ward, J. A. Beall, Ho, S, Pappas, C, Austermann, J, Beall, J, Becker, D, Choi, S, Datta, R, Duff, S, Gallardo, P, Grace, E, Hasselfield, M, Henderson, S, Hilton, G, Hubmayr, J, Koopman, B, Lanen, J, Li, D, Mcmahon, J, Nati, F, Niemack, M, Niraula, P, Salatino, M, Schillaci, A, Schmitt, B, Simon, S, Staggs, S, Stevens, J, Ward, J, Wollack, E, and Vavagiakis, E

Subjects
and Optic, Physics::Instrumentation and Detectors, Cosmic microwave background, Astrophysics::Cosmology and Extragalactic Astrophysics, SQUID, Dichroic glass, 01 natural sciences, law.invention, Telescope, Optics, law, Polarization, 0103 physical sciences, General Materials Science, 010306 general physics, ACTPol, Physics, 010308 nuclear & particles physics, business.industry, Detector, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Multichroic, Polarimeter, First light, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Atomic and Molecular Physic, Atacama Cosmology Telescope, Materials Science (all), business, Transition edge sensor
Abstract

The Atacama Cosmology Telescope Polarimeter (ACTPol) is a polarization sensitive receiver for the 6-m Atacama Cosmology Telescope (ACT) and measures the small angular scale polarization anisotropies in the cosmic microwave background (CMB). The full focal plane is composed of three detector arrays, containing over 3000 transition edge sensors (TES detectors) in total. The first two detector arrays, observing at 146 GHz, were deployed in 2013 and 2014, respectively. The third and final array is composed of multichroic pixels sensitive to both 90 and 146 GHz and saw first light in February 2015. Fabricated at NIST, this dichroic array consists of 255 pixels, with a total of 1020 polarization sensitive bolometers and is coupled to the telescope with a monolithic array of broad-band silicon feedhorns. The detectors are read out using time-division SQUID multiplexing and cooled by a dilution refrigerator at 110 mK. We present an overview of the assembly and characterization of this multichroic array in the lab, and the initial detector performance in Chile. The detector array has a TES detector electrical yield of 85 %, a total array sensitivity of less than 10 $$\upmu $$ K $$\sqrt{\text {s}}$$ , and detector time constants and saturation powers suitable for ACT CMB observations.

Published
2016

28. High-Density Superconducting Cables for Advanced ACTPol

Author

Brian J. Koopman, Jeff McMahon, Suzanne T. Staggs, J. Austermann, Federico Nati, Eve M. Vavagiakis, Shannon M. Duff, Emily Grace, Edward J. Wollack, Sara M. Simon, Benjamin L. Schmitt, Prajwal Niraula, Michael D. Niemack, Shawn W. Henderson, Alessandro Schillaci, Jonathan T. Ward, Patricio A. Gallardo, Jason R. Stevens, S. P. Ho, Maria Salatino, J. A. Beall, Dale Li, Christine G. Pappas, Pappas, C, Austermann, J, Beall, J, Duff, S, Gallardo, P, Grace, E, Henderson, S, Ho, S, Koopman, B, Li, D, Mcmahon, J, Nati, F, Niemack, M, Niraula, P, Salatino, M, Schillaci, A, Schmitt, B, Simon, S, Staggs, S, Stevens, J, Vavagiakis, E, Ward, J, and Wollack, E

Subjects
Wire bonding, Fabrication, Materials science, Cryogenics, 01 natural sciences, Flex, Atomic and Molecular Physics, 0103 physical sciences, FLEX, General Materials Science, Wafer, 010306 general physics, ACTPol, 010302 applied physics, business.industry, Detector, Condensed Matter Physics, Atacama Cosmology Telescope, Atomic and Molecular Physics, and Optics, Upgrade, Optoelectronics, Superconductor, Materials Science (all), and Optics, business
Abstract

Advanced ACTPol (AdvACT) is an upcoming Atacama Cosmology Telescope (ACT) receiver upgrade, scheduled to deploy in 2016, that will allow measurement of the cosmic microwave background polarization and temperature to the highest precision yet with ACT. The AdvACT increase in sensitivity is partly provided by an increase in the number of transition-edge sensors (TESes) per array by up to a factor of two over the current ACTPol receiver detector arrays. The high-density AdvACT TES arrays require 70 $$\upmu $$ m pitch superconducting flexible cables (flex) to connect the detector wafer to the first-stage readout electronics. Here, we present the flex fabrication process and test results. For the flex wiring layer, we use a 400-nm-thick sputtered aluminum film. In the center of the cable, the wiring is supported by a polyimide substrate, which smoothly transitions to a bare (uncoated with polyimide) silicon substrate at the ends of the cable for a robust wedge wire-bonding interface. Tests on the first batch of flex made for the first AdvACT array show that the flex will meet the requirements for AdvACT, with a superconducting critical current above 1 mA at 500 mK, resilience to mechanical and cryogenic stress, and a room temperature yield of 97 $$\,\%$$ .

Published
2016

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