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Fusion Science and Technology
Latest News
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.
Vasily K. Gusev, Nikolai V. Sakharov, Vitaly V. Shpeizman, Vladimir A. Korotkov, Anatoly G. Panin, Vladimir F. Soikin, Seppo O. J. Kivivuori, Asko J. Helenius, Jukka V. A. Somerkoski, Jukka A. Heikkinen
Fusion Science and Technology | Volume 34 | Number 2 | September 1998 | Pages 137-146
Technical Paper | doi.org/10.13182/FST98-A59
Articles are hosted by Taylor and Francis Online.
The central solenoid is a critical component of the spherical tokamak Globus-M (plasma major radius R = 0.36 m, plasma minor radius a = 0.24 m, aspect ratio R/a = 1.5, toroidal magnetic field BT 0.62 T, plasma current Ip 0.5 MA). The two-layer solenoid, 1312 mm long with a 200-mm outer diameter, is located between the 112-mm-diam inner rod of the toroidal field coils and the 217-mm-diam inner cylinder of the vacuum vessel. Strong magnetic and thermal cyclic loads acting on the solenoid require that it be manufactured from a high-strength hollow conductor. The conductor material selected for the solenoid winding is CuAg0,1(OF). Advanced manufacturing technology has made it possible to increase the continuous length of conductor (with an ~20 × 20 mm2 cross section) up to the 66 m that is required for Globus-M. To verify the winding procedure, a one-sixth-length solenoid prototype has been constructed and tested with loads exceeding the design loads acting on the full-scale solenoid. The tests included magnetic and strain measurements. The results are in satisfactory agreement with structural analysis.