{'fraction_non_alphanumeric': 0.03501945525291829, 'fraction_numerical': 0.007782101167315175, 'mean_word_length': 4.786516853932584, '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}}
Observation of Non-Circular Cross-Section for q=1 Magnetic Surface in Very Low-q Discharge (qa\lesssim2) of DIVA Tokamak

Non-circular cross-section for q=1 magnetic surfaces were experimentally shown in stable very low-q discharge (qa\lesssim2; qa is the safety factor at the plasma surface) of DIVA tokamak with and without a divertor. Heat flux to the first wall due to the sawtooth disruption in low-q discharge will become a serious problem in future large tokamak if sawtooth disruption cannot be suppressed.