CAREER: Novel Approaches and Instrumentation for 21cm Cosmology Experiments

中性氢的21 cm超精细跃迁的红移发射作为原始星系际介质的唯一示踪剂已经引起了相当大的关注。这一奖项将使PI能够开发下一代21厘米宇宙学仪器的基础，结合从他目前的精密阵列中学到的技术和原理，以探索再电离(纸)实验的时代。PI将建造三个原型多元素实验，使他能够研究三个不同的宇宙学时代：宇宙暗时代、再电离时代和重子声振荡的开始。来自这些实验的天线设计和数字化电子设备将反过来提供关于在未来仪器中移除受污染的天体物理前景的技术的宝贵信息。宇宙中第一个发光物体(恒星、黑洞)的诞生最终源于大爆炸，是宇宙进化中最后一个未被探索的阶段之一。作为这一奖项的一部分，将产生的仪器将促进这一领域的变革性科学，并将对宇宙的大尺度结构以及宇宙膨胀的演化提供关键制约。该奖项还将通过为加州大学伯克利分校射电天文实验室的学生提供实习机会，使PI能够培训下一代仪器制造者。最后，国际射电协会将制作许多公共领域的教学视频，这将使一批仪器演奏者和学生能够迅速掌握射电天文仪器的基本熟练程度。

Redshifted emission from the 21cm hyperfine transition of neutral hydrogen has gained considerable attention as a unique tracer of the primordial intergalactic medium. This award will enable the PI to develop the foundation of a next generation of 21cm cosmology instrumentation, incorporating techniques and principles learned from his current Precision Array to Probe the Epoch of Reionization (PAPER) experiment. The PI will construct three prototype multi-element experiments that will allow him to study three distinct cosmological epochs: the cosmic dark ages, the epoch of reionization, and the onset of baryon acoustic oscillations. The antenna designs and digitization electronics from these experiments will in turn provide invaluable information on techniques to remove contaminating astrophysical foregrounds in future instruments.The birth of the first luminous objects (stars, black holes) in the universe that ultimately stems from the Big Bang is one of the last unexplored phases of cosmic evolution. The instruments that will be produced as part of this award will facilitate transformational science in this area, and will provide key constraints on the large-scale structure of the universe, as well as the evolution of cosmological expansion. The award will also enable the PI to train the next generation of instrument builders by offering internships for students at UC Berkeley's Radio Astronomy Laboratory. Finally, the PI will produce numerous public-domain pedagogical videos, which will enable a cadre of instrumentalists and students to quickly acquire basic proficiency in radio-astronomy instrumentation.