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arXiv · 1611.00037

The DESI Experiment Part II: Instrument Design

DESI Collaboration·Amir Aghamousa·Jessica Aguilar·Steve Ahlen·Shadab Alam·Lori E. Allen·Carlos Allende Prieto·James Annis·Stephen Bailey·Christophe Balland·Otger Ballester·Charles Baltay·Lucas Beaufore·Chris Bebek·Timothy C. Beers·Eric F. Bell·José Luis Bernal·Robert Besuner·Florian Beutler·Chris Blake·Hannes Bleuler·Michael Blomqvist·Robert Blum·Adam S. Bolton·Cesar Briceno·David Brooks·Joel R. Brownstein·Elizabeth Buckley-Geer·Angela Burden·Etienne Burtin·Nicolas G. Busca·Robert N. Cahn·Yan-Chuan Cai·Laia Cardiel-Sas·Raymond G. Carlberg·Pierre-Henri Carton·Ricard Casas·Francisco J. Castander·Jorge L. Cervantes-Cota·Todd M. Claybaugh·Madeline Close·Carl T. Coker·Shaun Cole·Johan Comparat·Andrew P. Cooper·M. -C. Cousinou·Martin Crocce·Jean-Gabriel Cuby·Daniel P. Cunningham·Tamara M. Davis·Kyle S. Dawson·Axel de la Macorra·Juan De Vicente·Timothée Delubac·Mark Derwent·Arjun Dey·Govinda Dhungana·Zhejie Ding·Peter Doel·Yutong T. Duan·Anne Ealet·Jerry Edelstein·Sarah Eftekharzadeh·Daniel J. Eisenstein·Ann Elliott·Stéphanie Escoffier·Matthew Evatt·Parker Fagrelius·Xiaohui Fan·Kevin Fanning·Arya Farahi·Jay Farihi·Ginevra Favole·Yu Feng·Enrique Fernandez·Joseph R. Findlay·Douglas P. Finkbeiner·Michael J. Fitzpatrick·Brenna Flaugher·Samuel Flender·Andreu Font-Ribera·Jaime E. Forero-Romero·Pablo Fosalba·Carlos S. Frenk·Michele Fumagalli·Boris T. Gaensicke·Giuseppe Gallo·Juan Garcia-Bellido·Enrique Gaztanaga·Nicola Pietro Gentile Fusillo·Terry Gerard·Irena Gershkovich·Tommaso Giannantonio·Denis Gillet·Guillermo Gonzalez-de-Rivera·Violeta Gonzalez-Perez·Shelby Gott·Or Graur·Gaston Gutierrez·Julien Guy
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Abstract

DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey. The DESI instrument is a robotically-actuated, fiber-fed spectrograph capable of taking up to 5,000 simultaneous spectra over a wavelength range from 360 nm to 980 nm. The fibers feed ten three-arm spectrographs with resolution $R= \lambda/\Delta\lambda$ between 2000 and 5500, depending on wavelength. The DESI instrument will be used to conduct a five-year survey designed to cover 14,000 deg$^2$. This powerful instrument will 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-degree diameter field of view. The DESI collaboration will also deliver a spectroscopic pipeline and data management system to reduce and archive all data for eventual public use.

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DESI Collaboration, Amir Aghamousa, Jessica Aguilar, Steve Ahlen, Shadab Alam, Lori E. Allen, Carlos Allende Prieto, James Annis, Stephen Bailey, Christophe Balland, Otger Ballester, Charles Baltay, Lucas Beaufore, Chris Bebek, Timothy C. Beers, Eric F. Bell, José Luis Bernal, Robert Besuner, Florian Beutler, Chris Blake, Hannes Bleuler, Michael Blomqvist, Robert Blum, Adam S. Bolton, Cesar Briceno, David Brooks, Joel R. Brownstein, Elizabeth Buckley-Geer, Angela Burden, Etienne Burtin, Nicolas G. Busca, Robert N. Cahn, Yan-Chuan Cai, Laia Cardiel-Sas, Raymond G. Carlberg, Pierre-Henri Carton, Ricard Casas, Francisco J. Castander, Jorge L. Cervantes-Cota, Todd M. Claybaugh, Madeline Close, Carl T. Coker, Shaun Cole, Johan Comparat, Andrew P. Cooper, M. -C. Cousinou, Martin Crocce, Jean-Gabriel Cuby, Daniel P. Cunningham, Tamara M. Davis, Kyle S. Dawson, Axel de la Macorra, Juan De Vicente, Timothée Delubac, Mark Derwent, Arjun Dey, Govinda Dhungana, Zhejie Ding, Peter Doel, Yutong T. Duan, Anne Ealet, Jerry Edelstein, Sarah Eftekharzadeh, Daniel J. Eisenstein, Ann Elliott, Stéphanie Escoffier, Matthew Evatt, Parker Fagrelius, Xiaohui Fan, Kevin Fanning, Arya Farahi, Jay Farihi, Ginevra Favole, Yu Feng, Enrique Fernandez, Joseph R. Findlay, Douglas P. Finkbeiner, Michael J. Fitzpatrick, Brenna Flaugher, Samuel Flender, Andreu Font-Ribera, Jaime E. Forero-Romero, Pablo Fosalba, Carlos S. Frenk, Michele Fumagalli, Boris T. Gaensicke, Giuseppe Gallo, Juan Garcia-Bellido, Enrique Gaztanaga, Nicola Pietro Gentile Fusillo, Terry Gerard, Irena Gershkovich, Tommaso Giannantonio, Denis Gillet, Guillermo Gonzalez-de-Rivera, Violeta Gonzalez-Perez, Shelby Gott, Or Graur, Gaston Gutierrez, Julien Guy. 2016-10-31. The DESI Experiment Part II: Instrument Design. https://arxiv.org/abs/1611.00037

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