학술논문
The DESI Experiment Part II: Instrument Design
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article
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Collaboration, DESI; Aghamousa, Amir; Aguilar, Jessica; Ahlen, Steve; Alam, Shadab; Allen, Lori E; Prieto, Carlos Allende; Annis, James; Bailey, Stephen; Balland, Christophe; Ballester, Otger; Baltay, Charles; Beaufore, Lucas; Bebek, Chris; Beers, Timothy C; Bell, Eric F; Bernal, José Luis; Besuner, Robert; Beutler, Florian; Blake, Chris; Bleuler, Hannes; Blomqvist, Michael; Blum, Robert; Bolton, Adam S; Briceno, Cesar; Brooks, David; Brownstein, Joel R; Buckley-Geer, Elizabeth; Burden, Angela; Burtin, Etienne; Busca, Nicolas G; Cahn, Robert N; Cai, Yan-Chuan; Cardiel-Sas, Laia; Carlberg, Raymond G; Carton, Pierre-Henri; Casas, Ricard; Castander, Francisco J; Cervantes-Cota, Jorge L; Claybaugh, Todd M; Close, Madeline; Coker, Carl T; Cole, Shaun; Comparat, Johan; Cooper, Andrew P; Cousinou, M-C; Crocce, Martin; Cuby, Jean-Gabriel; Cunningham, Daniel P; Davis, Tamara M; Dawson, Kyle S; Macorra, Axel de la; Vicente, Juan De; Delubac, Timothée; Derwent, Mark; Dey, Arjun; Dhungana, Govinda; Ding, Zhejie; Doel, Peter; Duan, Yutong T; Ealet, Anne; Edelstein, Jerry; Eftekharzadeh, Sarah; Eisenstein, Daniel J; Elliott, Ann; Escoffier, Stéphanie; Evatt, Matthew; Fagrelius, Parker; Fan, Xiaohui; Fanning, Kevin; Farahi, Arya; Farihi, Jay; Favole, Ginevra; Feng, Yu; Fernandez, Enrique; Findlay, Joseph R; Finkbeiner, Douglas P; Fitzpatrick, Michael J; Flaugher, Brenna; Flender, Samuel; Font-Ribera, Andreu; Forero-Romero, Jaime E; Fosalba, Pablo; Frenk, Carlos S; Fumagalli, Michele; Gaensicke, Boris T; Gallo, Giuseppe; Garcia-Bellido, Juan; Gaztanaga, Enrique; Fusillo, Nicola Pietro Gentile; Gerard, Terry; Gershkovich, Irena; Giannantonio, Tommaso; Gillet, Denis; Gonzalez-de-Rivera, Guillermo; Gonzalez-Perez, Violeta; Gott, Shelby; Graur, Or; Gutierrez, Gaston; Guy, Julien
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Abstract
DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based darkenergy experiment that will study baryon acoustic oscillations and the growthof structure through redshift-space distortions with a wide-area galaxy andquasar redshift survey. The DESI instrument is a robotically-actuated,fiber-fed spectrograph capable of taking up to 5,000 simultaneous spectra overa wavelength range from 360 nm to 980 nm. The fibers feed ten three-armspectrographs with resolution $R= \lambda/\Delta\lambda$ between 2000 and 5500,depending on wavelength. The DESI instrument will be used to conduct afive-year survey designed to cover 14,000 deg$^2$. This powerful instrumentwill be installed at prime focus on the 4-m Mayall telescope in Kitt Peak,Arizona, along with a new optical corrector, which will provide a three-degreediameter field of view. The DESI collaboration will also deliver aspectroscopic pipeline and data management system to reduce and archive alldata for eventual public use.