title: SUDA: A SUrface Dust Analyser for Compositional Mapping of the Galilean Moon Europa
Creators: name: Kempf, Sascha
name: Tucker, Scott
name: Altobelli, Nicolas
name: Briois, Christelle
name: Cable, Morgan L.
name: Grün, Eberhard
name: Gudipati, Murthy S.
name: Henderson, Bryana L.
name: Hsu, Hsian-Wen
name: Hand, Kevin
name: Horanyi, Mihaly
name: Postberg, Frank
name: Schmidt, Jürgen
name: Srama, Ralf
name: Sternovsky, Zoltan
name: Tobie, Gabriel
name: Zolotov, Mikhail Y.
name: Belting, Chris
name: Bortfeldt, Susan
name: Bouwman, Jordy
name: Brennan, Nat
name: Bryant, Karen
name: Cassidy, Timothy
name: Crotser, David
name: Curtin, Alexandra
name: DeVito, Elz
name: Ebuen, Donrich
name: Faber, Nat
name: Fisher, Melanie
name: Fontanese, John
name: Fowle, Maxwell
name: Frank, Wendy
name: Gurst, Scott
name: Haselschwardt, Sally
name: Hoxie, Vaughn
name: Hubbell, Karl
name: James, David
name: Kien, Mark
name: Knappmiller, Scott
name: Kohnert, Rick
name: Lampe, Alexander
name: Lankton, Mark
name: Lev-Tov, Sean
name: McGinn, Crystal
name: Miller, Marc
name: Newcomb, Gregory
name: Oberg, Samuel
name: O’Brien, Leela
name: Pilewskie, Kathrine
name: Polson, Shawn
name: Scarffe-Barrett, Victoria
name: Summers, David
name: Wade, Stacy
name: Ware, Alexandria
name: Yehle, Alan
name: Wuerthner, Corinne
name: Garcia Arteaga, Adrian
name: Oaida, Bogdan
name: Eberl, Chad
name: Fitton, Polly
name: Goode, William
name: Levin, Zuni
name: Lowry, Gwyneth
name: Stanley, Jared
name: Tracy, Anthony
name: Ulibarri, Zach
name: Williams, Ethan
name: Yoke, Camille
name: Southworth, Ben S.
name: Hillier, Jonathan K.
name: Khawaja, Nozair
name: Klenner, Fabian
name: Napoleoni, Maryse
name: Simolka, Jonas
name: Sioeng, Jason
Publisher: name: Freie Universität Berlin
Year: 2025
Subjects: subject: Surface Dust Analyser
subject: Compositional Mapping
subject: Galilean Moon Europa
classificationCode: 520
subject: Astronomie und zugeordnete Wissenschaften

description: The Surface Dust Analyser (SUDA) is a mass spectrometer onboard the Europa Clipper mission for investigating the surface composition of the Galilean moon Europa. Atmosphereless planetary moons such as the Galilean satellites are wrapped into a ballistic dust exosphere populated by tiny samples from the moon’s surface produced by impacts of fast micrometeoroids. SUDA will measure the composition of such surface ejecta during close flybys of Europa to obtain key chemical signatures for revealing the satellite’s composition such as organic molecules and salts, history, and geological evolution. Because of their ballistic orbits, detected ejecta can be traced back to the surface with a spatial resolution roughly equal to the instantaneous altitude of the spacecraft. SUDA is a Time-Of-Flight (TOF), reflectron-type impact mass spectrometer, optimized for a high mass resolution which only weakly depends on the impact location. The instrument will measure the mass, speed, charge, elemental, molecular, and isotopic composition of impacting grains. The instrument’s small size of 268mm×250mm×171mm, radiation-hard design, and rather large sensitive area of 220 cm 2 matches well the challenging demands of the Clipper mission.