Paper 13102-41
Paper 13102-41
ALMA Band 8 version2 receiver upgrade project
20 June 2024 • 14:20 - 14:40 Japan Standard Time | Room G318/319, North - 3F
Abstract
The Atacama Large Millimeter/submillimeter Array (ALMA) Wideband Sensitivity Upgrade (WSU) will at least double the observation bandwidth and improve the sensitivity and scientific capabilities. The WSU requires upgrading the receiver front-end and the associated analog and digital electronics including the correlator, as well as the ALMA software. In line with the WSU mission, the National Astronomical Observatory of Japan (NAOJ) initiated the ALMA Band 8 (385-500 GHz) version2 receiver upgrade project, aiming to build an upgrade of the currently existing receiver cartridge with a substantially improved second-generation version. This project originated from significant advances in receiver technologies and a variety of our previous wideband studies in the last decade. This paper briefly summarizes an overview of this project, scientific needs in this frequency range, and the technical readiness and challenges for critical components and subsystems.
Presenter
National Astronomical Observatory of Japan (Japan)
Takafumi Kojima received B.S., M.S., and D.S. degrees in physics from the Osaka Prefecture University, Osaka, Japan, in 2005, 2007, and 2010, respectively. From 2007 to 2010, he joined the National Astronomical Observatory of Japan (NAOJ) as a graduate student and worked on the ALMA Band 10 SIS mixer development. From 2010 to 2012, he was with Microsystem Integration Laboratories, Nippon Telegraph and Telephone Corporation (NTT), Atsugi, Kanagawa, Japan, where he was engaged in research on signal processing for a millimeter-wave near-field imaging system. He is currently an Associate Professor at the Advanced Technology Center, NAOJ, Mitaka, Japan. His research interests are wideband superconducting circuits from microwave to submillimeter wave for radio astronomy.