ðə tɹˈækɪŋ sˈɪstəm plˈɑːts ðə hˈiːlɪks tɹˈeɪst baɪ sˈʌtʃ ɐ tʃˈɑːɹdʒd pˈɑːɹɾɪkəl æz ɪt tɹˈævəlz θɹuː ɐ mæɡnˈɛɾɪk fˈiːld baɪ lˈoʊkəlˌaɪzɪŋ ɪɾ ɪn spˈeɪs ɪn fˈaɪnlisɛɡmˈɛntɪd lˈeɪɚz ʌv dɪtˈɛktɪŋ mətˈɪɹiəl, jˈuːʒuːəli sˈɪlɪkən.
The tracking system plots the helix traced by such a charged particle as it travels through a magnetic field by localizing it in space in finely-segmented layers of detecting material, usually silicon.