2022-06-212022-06-217/10/2022ICES-2022-403https://hdl.handle.net/2346/89858Murray Darrach, Jet Propulsion Laboratory / California Institute of Technology, USStojan Madzunkov, Jet Propulsion Laboratory / California Institute of Technology, USByunghoon Bae, Jet Propulsion Laboratory / California Institute of Technology, USRichard Kidd, Jet Propulsion Laboratory / California Institute of Technology, USFrank Maiwald, Jet Propulsion Laboratory / California Institute of Technology, USCharles Malone, Jet Propulsion Laboratory / California Institute of Technology, USDragan Nikolic, Jet Propulsion Laboratory / California Institute of Technology, USAnton Belousov, Jet Propulsion Laboratory / California Institute of Technology, USFang Zhong, Jet Propulsion Laboratory / California Institute of Technology, USJurij Simcic, Jet Propulsion Laboratory / California Institute of Technology, USMargie Homer, Jet Propulsion Laboratory / California Institute of Technology, USMarianne Gonzales, Jet Propulsion Laboratory / California Institute of Technology, USVachik Garkanian, Jet Propulsion Laboratory / California Institute of Technology, USValeria Lopez, Jet Propulsion Laboratory / California Institute of Technology, USCecile Jung-Kubiak, Jet Propulsion Laboratory / California Institute of Technology, USMina Rais-Zadeh, Jet Propulsion Laboratory / California Institute of Technology, USHannes Krause, Jet Propulsion Laboratory / California Institute of Technology, USTina Tillmans, Jet Propulsion Laboratory / California Institute of Technology, USICES205: Advanced Life Support Sensor and Control TechnologyThe 51st International Conference on Environmental Systems was held in Saint Paul, Minnesota, US, on 10 July 2022 through 14 July 2022.The Spacecraft Atmosphere Monitor (S.A.M.) is a miniaturized gas chromatograph mass spectrometer (GC/MS) instrument that is being developed for monitoring the cabin atmosphere for human spaceflight missions. The first Technology Demonstration Unit (TDU1) operated successfully aboard the International Space Station (ISS) from August 2019 to July 2021, exceeding its 1 year planned operational lifetime. The TDU1 continuously monitored the ISS cabin atmosphere for the major constituents. In June 2020 the TDU1 was also reconfigured at the request of the ISS vehicle office and successfully determined that there was no benzene leaking into the ISS atmosphere. The technology demonstration unit #2 (TDU2) is scheduled to be deployed on the ISS in 2022. While on-station, TDU2 will continuously monitor the major atmospheric constituents as well as trace organic volatiles. The S.A.M. TDU2 uses the same quadrupole ion trap mass spectrometer (QITMS) sensor as in TDU1, but includes a MEMS preconcentrator, gas chromatograph, and microvalve system. Its miniature, ruggedized form factor allows the S.A.M. to be aisle-deployed to monitor the cabin in different locations and during activities such as exercise and sleep. The operational performance of TDU1 and the current status of TDU2 will be discussed.application/pdfengmass spectrometergas chromatographair qualityPresentation