{'fraction_non_alphanumeric': 0.022690437601296597, 'fraction_numerical': 0.027552674230145867, 'mean_word_length': 4.775700934579439, '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}}
PHENIX for the first spin collider RHIC

Acceleration of polarized protons in Relativistic Heavy Ion Collider (RHIC) is to provide unique tools to study the spin structure of nucleon, covering the √ s region from 50GeV to 500GeV with proton polarization of 70%. At 500GeV the luminosity of 2 × 1032cm−2sec−1 is expected. PHENIX, one of the two major detectors at RHIC, is going to investigate this new field of spin physics through the measurements of leptons and photons to probe possible spin carriers in the nucleon. Overview of the PHENIX spin program is presented and the expected physics outcomes are discussed.