The DESI Experiment Part II: Instrument Design
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The DESI Experiment Part II: Instrument Design

  • Author(s): 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;
  • Habib, Salman;
  • Heetderks, Henry;
  • Heetderks, Ian;
  • Heitmann, Katrin;
  • Hellwing, Wojciech A;
  • Herrera, David A;
  • Ho, Shirley;
  • Holland, Stephen;
  • Honscheid, Klaus;
  • Huff, Eric;
  • Hutchinson, Timothy A;
  • Huterer, Dragan;
  • Hwang, Ho Seong;
  • Laguna, Joseph Maria Illa;
  • Ishikawa, Yuzo;
  • Jacobs, Dianna;
  • Jeffrey, Niall;
  • Jelinsky, Patrick;
  • Jennings, Elise;
  • Jiang, Linhua;
  • Jimenez, Jorge;
  • Johnson, Jennifer;
  • Joyce, Richard;
  • Jullo, Eric;
  • Juneau, Stéphanie;
  • Kama, Sami;
  • Karcher, Armin;
  • Karkar, Sonia;
  • Kehoe, Robert;
  • Kennamer, Noble;
  • Kent, Stephen;
  • Kilbinger, Martin;
  • Kim, Alex G;
  • Kirkby, David;
  • Kisner, Theodore;
  • Kitanidis, Ellie;
  • Kneib, Jean-Paul;
  • Koposov, Sergey;
  • Kovacs, Eve;
  • Koyama, Kazuya;
  • Kremin, Anthony;
  • Kron, Richard;
  • Kronig, Luzius;
  • Kueter-Young, Andrea;
  • Lacey, Cedric G;
  • Lafever, Robin;
  • Lahav, Ofer;
  • Lambert, Andrew;
  • Lampton, Michael;
  • Landriau, Martin;
  • Lang, Dustin;
  • Lauer, Tod R;
  • Goff, Jean-Marc Le;
  • Guillou, Laurent Le;
  • Suu, Auguste Le Van;
  • Lee, Jae Hyeon;
  • Lee, Su-Jeong;
  • Leitner, Daniela;
  • Lesser, Michael;
  • Levi, Michael E;
  • L'Huillier, Benjamin;
  • Li, Baojiu;
  • Liang, Ming;
  • Lin, Huan;
  • Linder, Eric;
  • Loebman, Sarah R;
  • Lukić, Zarija;
  • Ma, Jun;
  • MacCrann, Niall;
  • Magneville, Christophe;
  • Makarem, Laleh;
  • Manera, Marc;
  • Manser, Christopher J;
  • Marshall, Robert;
  • Martini, Paul;
  • Massey, Richard;
  • Matheson, Thomas;
  • McCauley, Jeremy;
  • McDonald, Patrick;
  • McGreer, Ian D;
  • Meisner, Aaron;
  • Metcalfe, Nigel;
  • Miller, Timothy N;
  • Miquel, Ramon;
  • Moustakas, John;
  • Myers, Adam;
  • Naik, Milind;
  • Newman, Jeffrey A;
  • Nichol, Robert C;
  • Nicola, Andrina;
  • Costa, Luiz Nicolati da;
  • Nie, Jundan;
  • Niz, Gustavo;
  • Norberg, Peder;
  • Nord, Brian;
  • Norman, Dara;
  • Nugent, Peter;
  • O'Brien, Thomas;
  • Oh, Minji;
  • Olsen, Knut AG;
  • Padilla, Cristobal;
  • Padmanabhan, Hamsa;
  • Padmanabhan, Nikhil;
  • Palanque-Delabrouille, Nathalie;
  • Palmese, Antonella;
  • Pappalardo, Daniel;
  • Pâris, Isabelle;
  • Park, Changbom;
  • Patej, Anna;
  • Peacock, John A;
  • Peiris, Hiranya V;
  • Peng, Xiyan;
  • Percival, Will J;
  • Perruchot, Sandrine;
  • Pieri, Matthew M;
  • Pogge, Richard;
  • Pollack, Jennifer E;
  • Poppett, Claire;
  • Prada, Francisco;
  • Prakash, Abhishek;
  • Probst, Ronald G;
  • Rabinowitz, David;
  • Raichoor, Anand;
  • Ree, Chang Hee;
  • Refregier, Alexandre;
  • Regal, Xavier;
  • Reid, Beth;
  • Reil, Kevin;
  • Rezaie, Mehdi;
  • Rockosi, Constance M;
  • Roe, Natalie;
  • Ronayette, Samuel;
  • Roodman, Aaron;
  • Ross, Ashley J;
  • Ross, Nicholas P;
  • Rossi, Graziano;
  • Rozo, Eduardo;
  • Ruhlmann-Kleider, Vanina;
  • Rykoff, Eli S;
  • Sabiu, Cristiano;
  • Samushia, Lado;
  • Sanchez, Eusebio;
  • Sanchez, Javier;
  • Schlegel, David J;
  • Schneider, Michael;
  • Schubnell, Michael;
  • Secroun, Aurélia;
  • Seljak, Uros;
  • Seo, Hee-Jong;
  • Serrano, Santiago;
  • Shafieloo, Arman;
  • Shan, Huanyuan;
  • Sharples, Ray;
  • Sholl, Michael J;
  • Shourt, William V;
  • Silber, Joseph H;
  • Silva, David R;
  • Sirk, Martin M;
  • Slosar, Anze;
  • Smith, Alex;
  • Smoot, George F;
  • Som, Debopam;
  • Song, Yong-Seon;
  • Sprayberry, David;
  • Staten, Ryan;
  • Stefanik, Andy;
  • Tarle, Gregory;
  • Tie, Suk Sien;
  • Tinker, Jeremy L;
  • Tojeiro, Rita;
  • Valdes, Francisco;
  • Valenzuela, Octavio;
  • Valluri, Monica;
  • Vargas-Magana, Mariana;
  • Verde, Licia;
  • Walker, Alistair R;
  • Wang, Jiali;
  • Wang, Yuting;
  • Weaver, Benjamin A;
  • Weaverdyck, Curtis;
  • Wechsler, Risa H;
  • Weinberg, David H;
  • White, Martin;
  • Yang, Qian;
  • Yeche, Christophe;
  • Zhang, Tianmeng;
  • Zhao, Gong-Bo;
  • Zheng, Yi;
  • Zhou, Xu;
  • Zhou, Zhimin;
  • Zhu, Yaling;
  • Zou, Hu;
  • Zu, Ying
  • et al.
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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