讲座预告
Cary Library Science Café 非常荣幸欢邀请到Dennis Whyte 教授与我们分享他从欧姆定律到尖端核聚变系统的历程。我们热忱邀请您的到来,和大家一起,聆听该领域最优秀的人才的分享,并对我们共同的未来充满希望和乐观。

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讲座题目
从欧姆定律到尖端核聚变系统的历程
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讲座嘉宾
丹尼斯·怀特教授
麻省理工学院核科学与工程系教授,
等离子体科学与聚变中心主任
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讲座时间
2022年11月15日 周二
Tuesday, November 15,2022
美国东部时间:7:30-8:30PM
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参与方式
线上线下同步进行,均可注册报名参加。
线上:ZOOM会议室
注册请扫下方二维码:
https://us02web.zoom.us/webinar/register/5916600813395/WN_yAEiH6WkTd2grdEVK8IA9w
线下地点:Living Room Cary Memorial Library1874 Massachusetts Avenue, Lexington, MA, 02420
欢迎线下参加,与科学家面对面交流。
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嘉宾介绍
丹尼斯·怀特教授出生于加拿大一个人口不到 2000 人的小镇肖纳文,他成为核聚变领域杰出人物很早就有迹可循了。他记得他的父亲在二年级或三年级时教他欧姆定律,这是电学的基本定律。在这种引导下,长大后的他希望进入一个实用领域进修,他最后选择在萨斯喀彻温大学学习工程物理。在那里,他上了 Harvey Skarsgard 教授的等离子体和聚变课程,其余的,正如他们所说,就是历史。 
怀特教授在魁北克大学获得硕士和博士学位。这这里,他第一次接触到了托卡马克技术。托卡马克是一个装有电磁体的外壳,用于容纳一种称为等离子体的极热气体。在这种等离子体中,不同的氢同位素漂浮并相互碰撞。如果它们的碰撞导致它们融合,则会产生一个氦原子并释放能量,这个过程称为核聚变,它为我们宇宙中的太阳和所有其他恒星提供动力。
与在其引力井中包含所有燃料的恒星不同,在地球上这需要极高的温度(大约 1 亿摄氏度),因此需要使用等离子和托卡马克等容器。聚变能量加热和维持等离子体,任何额外的能量都可以用来发电。这种电力是高纯度的,并且大部分氢同位素都很丰富。
怀特教授后来移居美国,在圣地亚哥的 DIII-D 国家核聚变设施工作,并在加州大学担任讲师,之后前往威斯康星大学麦迪逊分校担任助理教授。2006 年,他搬到麻省理工学院,在这里他进行了各种聚变技术的实验。发表论文350余篇,现任核科学与工程系教授,麻省理工学院等离子体科学与聚变中心主任。 
像许多科学家教育家一样,怀特教授的一些研究灵感来自学生的创造力和活力。在他的课程 22.63:聚变工程原理中,他的学生设计了概念聚变系统,几年前,他的学生从这里开始使用高温超导线圈设计紧凑、模块化和潜在的商业聚变反应堆。这个设计平台,现在称为 SPARC,随后被分拆给初创公司 Commonwealth Fusion Systems (CFS)。CFS 聘请了他班上的一些学生,并吸引了超过 20 亿美元的风险投资资金。 
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主办单位
Sponsored by the Cary Library Foundation.
Presented in partnership with the Town of Lexington’s Sustainability & Resilience Office, Lexington Climate Action Network (LexCAN), and Mothers Out Front.
In collaboration with Ashland Public Library, Dedham Public Library, Randall Library (Stowe), Rowley Public Library, and  Watertown Free Public Library.
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英文介绍
Born in Shaunavon, a Canadian town of less than 2,000 people, Professor Dennis Whyte’s career trajectory to become a towering figure in the field of nuclear fusion started early. He remembers his father teaching him Ohm’s law, a fundamental law in electricity, in the second or third grade. Fostered by this guidance and wanting to study a practical field, he studied engineering physics at the University of Saskatchewan. There he took a class on plasma and fusion from Professor Harvey Skarsgard, and the rest, as they say, is history.
Professor Whyte proceeded to obtain his masters and Ph.D. at the University of Quebec, where he was introduced to tokamak technology. The tokamak is an enclosure that is fitted with electromagnets to contain an extremely hot gas, called plasma. Within this plasma, different hydrogen isotopes float and collide with each other. If their collision results in them fusing, a helium atom is created, and energy is released. This process, called nuclear fusion, is what powers the sun and all other stars in our universe.
Unlike a star which contains all the fuel within its gravitational well, on Earth this requires extremely high temperatures (in the order of 100 million degrees Centigrade). Therefore the requirement of using a plasma and a container such as a tokamak. Fusion energy heats and sustains the plasma, and any extra energy can be used to generate electricity. This electricity is clean and most of the hydrogen isotopes are abundant.
Professor Whyte moved to the U.S. to work in the DIII-D National Fusion facility in San Diego and as a lecturer at the University of California there before moving to University of Wisconsin-Madison as an assistant professor. In 2006 he moved to MIT where he conducted experiments in various fusion technologies. He has more than 350 papers to his name and is currently a professor in the Department of Nuclear Science and Engineering, and the Director of the MIT Plasma Science & Fusion Center.
Like many scientist-educators, Professor Whyte draws inspiration for some of his research from the creativity and energy of his students. In his class 22.63: Principles of Fusion Engineering, his students design conceptual fusion systems and from here, years ago, that his students originated the design of a compact, modular, and potentially commercial fusion reactor using high-temperature superconducting coils. This design platform, now called SPARC, has been subsequently spun-off to a start-up, Commonwealth Fusion Systems (CFS). CFS employs some students from his class and has attracted more than $2 billion in venture capital funding.
The Cary Library Science Café is excited to welcome Professor Dennis Whyte to share with all of us his journey from Ohm’s Law to cutting edge nuclear fusion systems. We hope you enjoy this rare opportunity to hear from absolute the best in the field and come out hopeful and optimistic about our shared future.
This is a HYBRID program. To attend via Zoom, please register to receive the Zoom link. In-person attendance is on a first come basis.
https://us02web.zoom.us/webinar/register/5916600813395/WN_yAEiH6WkTd2grdEVK8IA9w
编辑:Edison Zhang
翻译:Lily Zeng

 策划:Edison Zhang & 丁薇
 Lion莱恩青少年编辑部
 Lion Youth Editorial Board
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Cary Libary Foundation 
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