Overview of the Dark Energy Spectroscopic Instrument

Conference · Fri Jul 06 00:00:00 EDT 2018 · Proc.SPIE Int.Soc.Opt.Eng.

DOI:https://doi.org/10.1117/12.2313063· OSTI ID:1472109

Martini, Paul

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 square degrees will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5000 fiber optic positioners. The fibers in turn feed ten broad-band spectrographs. We present an overview of the instrumentation, the main technical requirements and challenges, and the current status of the project.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: DESI
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1472109
• Report Number(s): arXiv:1807.09287; FERMILAB-CONF-18-378-AE-CD; 1682391
• Journal Information: Proc.SPIE Int.Soc.Opt.Eng., Vol. 10702; Conference: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, USA, 06/10-06/15/2018
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY