Bryce Bixler
A5012661543- Radio Astronomy Observations and Technology
- Superconducting and THz Device Technology
- Geophysics and Gravity Measurements
- Cosmology and Gravitation Theories
- Physics of Superconductivity and Magnetism
- Ionosphere and magnetosphere dynamics
- Adaptive optics and wavefront sensing
- Astronomy and Astrophysical Research
- Spacecraft and Cryogenic Technologies
- Astronomical Observations and Instrumentation
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Astrophysics and Cosmic Phenomena
University of California, San Diego
2020-2025
Lawrence Berkeley National Laboratory
2018
We present the requirements, design, and evaluation of cryogenic continuously rotating half-wave plate (CHWP) for Simons Observatory (SO). SO is a cosmic microwave background polarization experiment at Parque Astronómico de Atacama in northern Chile that covers wide range angular scales using both small (⌀0.42 m) large (⌀6 aperture telescopes. In particular, telescopes (SATs) focus on primordial B-mode polarization. To this end, SATs employ CHWP to modulate incident light 8 Hz, suppressing...
Abstract The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert Chile. SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes sensitivity σ ( r ) = 0.002, with quantified systematic errors well below this value. Each SAT self-contained cryogenic telescope 35° field view, 42 cm diameter optical aperture, 40 K half-wave plate,...
The Simons Observatory (SO) experiment is a cosmic microwave background (CMB) located in the Atacama Desert, Chile. SO' s small aperture telescopes (SATs) consist of three designed for precise CMB polarimetry at large angular scales. Each SAT uses cryogenic rotating half-wave plate (HWP) as polarization modulator to mitigate atmospheric 1/f noise and other systematics. To realize efficient modulation over observation bands, we fabricated an achromatic HWP (AHWP) consisting sapphire plates...
We present the design and laboratory evaluation of a cryogenic continuously rotating half-wave plate (CHWP) for POLARBEAR-2b (PB-2b) cosmic microwave background (CMB) receiver, second installment Simons Array. PB-2b will observe at 5,200 m elevation in Atacama Desert Chile two frequency bands centered 90 150 GHz. In order to suppress atmospheric 1/f noise mitigate systematic effects that arise when differencing orthogonal detectors, modulates linear sky polarization using CHWP 2 Hz. The has...
We present the requirements, design and evaluation of cryogenic continuously rotating half-wave plate (CHWP) for Simons Observatory (SO). SO is a cosmic microwave background (CMB) polarization experiment at Parque Astron\'{o}mico Atacama in northern Chile that covers wide range angular scales using both small (0.42 m) large (6 aperture telescopes. In particular, telescopes (SATs) focus on primordial B-mode polarization. To this end, SATs employ CHWP to modulate incident light 8~Hz,...
Abstract The Simons Observatory (SO) experiment is a cosmic microwave background (CMB) located in the Atacama Desert, Chile. SO’s small aperture telescopes (SATs) consist of three designed for precise CMB polarimetry at large angular scales. Each SAT uses cryogenic rotating half-wave plate (HWP) as polarization modulator to mitigate atmospheric 1/f noise and other systematics. To realize efficient modulation over observation bands, we fabricated an achromatic HWP (AHWP) consisting sapphire...
The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5,200 m in the Atacama Desert Chile. SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes sensitivity $\sigma(r)=0.002$, with quantified systematic errors well below this value. Each SAT self-contained cryogenic telescope 35$^\circ$ field view, 42 cm diameter optical aperture, 40 K half-wave...
The Simons Array is a set of three millimeter-wavelength telescopes in the Atacama Desert northern Chile. It designed to measure polarization cosmic microwave background caused by density perturbations, gravitational lensing, and primordial waves. Polarbear-2b (PB-2b) receiver that will be mounted onto Paul Telescope, second telescope. Each pixel PB-2b focal plane has broadband sinuous antenna coupled transition-edge sensor (TES) bolometers. In all, there are more than 7,500 antenna-coupled...