{'fraction_non_alphanumeric': 0.02365930599369085, 'fraction_numerical': 0.0031545741324921135, 'mean_word_length': 5.07177033492823, '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}}
Possibilities of Laser Application for the Gontrol of Periphery Currents

It is known that in helical devices, where the rotational transform is created by means of external magnetic field, a bootstrap current can appear in a finite-pressure plasma. This current can strongly affect the magnetic configuration and, consequently, plasma confinement [1]. The influence ofbootstrap current on the magnetic configuration can be reduced by generating an additional oppositely directed current. The bootstrap current can vary essentially in the periphery region, and the standard methods of current drive (neutral beams, lower hybrid waves, etc) may be ineffective for compensating the bootstrap current. The proposed laser method of current drive allows the local control of the current density [2]. At the same time, at the periphery the electron temperature is lower than in the center. Therefore, at the periphery the mechanism oflaser cunent drive will be different from that described in Ref. [2]: it should be similar to the mechanism typical for neutral beam injection. The difference is that the ion beams would appear because of the laser ablation of the solid pellet. Parameters of CO2-laser which could be used for the bootstrap current control in LHD are given.