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Former Exelon CEO Chris Crane remembered for “transformational milestones”
Crane
Exelon announced that Chris Crane, the company’s former chief executive, passed away on Saturday in Chicago at the age of 65.
Crane served as the company’s president and CEO from 2012 until his retirement in December 2022. During his tenure, he steered the energy company through several transformational milestones, including the successful mergers with Constellation Energy in 2012 and Pepco Holdings in 2016, creating the largest utility business by customer count in the United States.
In 2022, with the spin-off of Constellation as the generation and retail side of energy business (with the largest U.S. nuclear fleet), Crane led the creation of a stand-alone transmission and delivery energy company.
A. Pérez-Navarro
Fusion Science and Technology | Volume 27 | Number 2 | March 1995 | Pages 152-161
Technical Paper | Special Section: Pulsed High-Density Systems / Fusion Reactor | doi.org/10.13182/FST95-A30371
Articles are hosted by Taylor and Francis Online.
Stellarators are steady state, have an absence of disruptive instabilities, have low recirculating power, and are natural divertors—all of which are intrinsic properties that make stellarators especially attractive as fusion reactors. The question is addressed of the minimum size requirements for a stellarator reactor, independent of the specific configuration chosen to optimize physics and technology aspects. A one-dimensional model is used to deduce by postulating specific plasma profiles the power balance between alpha-particle heating, radiation, and conductive losses in the plasma and to determine the minimum size compatible with the level of output power of the reactor and the operational limits due to plasma confinement, pressure, and density. Also considered is the influence on stellarator reactor size requirements of particle accumulation and of the presence of impurities in the plasma. Additionally, with regard to practical realization of the device, the limitations of wall power deposition and device aspect ratio are considered. Available stellarator reactor designs are reviewed based on these results.