{'fraction_non_alphanumeric': 0.020892687559354226, 'fraction_numerical': 0.018043684710351376, 'mean_word_length': 4.728260869565218, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Optimization simulations of electron cyclotron wave heating and current drive in experimental advanced superconducting tokamak

A large number of simulations of electron cyclotron heating and current drive (ECCD) were carried out using TORAY before the installation of an electron cyclotron wave system with a maximum of 4 MW power and 140 GHz frequency on the experimental advanced superconducting tokamak (EAST). The findings that the range of allowable launch angles is about 50° poloidal and about 60° toroidal, when all the plasma areas of interest are covered, determine the allowable steering angles of the launch mirror under a power deposition rate not less than 0.98. The variable range of the integrated driven current is larger at a radius of 0.5a–0.6a than at other radii. The best scheme for core localized heating is a launch from Z = 30 cm (the vertical mirror position). From an analysis of the optimum figures of merit of the ECCD, it is found that a launch from Z = 30 cm is the best for the suppression of neoclassical tearing modes.