MUSTANG 2: A Large Focal Plane Array for the 100 m Green Bank Telescope

• DOI: 10.1007/s10909-013-1070-8
• Publication Date: 2014-01-16T10:50:23Z
• Authors: S. R. Dicker; P. A. R. Ade; J. Aguirre; J. A. Brevik; H. M. Cho; R. Datta; M. J. Devlin; B. Dober; D. Egan; J. Ford; P. Ford; G. Hilton; K. D. Irwin; B. S. Mason; P. Marganian; M. Mello; J. J. McMahon; T. Mroczkowski; M. Rosenman; C. Tucker; L. Vale; S. White; M. Whitehead; A. H. Young
• Keywords: Transition edge sensor; Green Bank Telescope

This paper describes MUSTANG 2, a 338 element focal plane array that is being built for the Green Bank Telescope. Each element consists of a profiled feedhorn coupled to two transition edge sensor bolometers, one for each polarization. Initial deployment will be with 32 detectors, but once fully populated, MUSTANG 2 will be capable of mapping a $$8'\times 8'$$ area to $$23~\upmu $$ Jy in 1 h with good image fidelity on angular scales from $$9''$$ to $$6'$$ . As well as an instrument overview, the choice of bandpass and the design of the feeds, detectors and readout are given.