For the application of Article L. 613-57, the resolution board shall submit a request to the Chief Justice of the Cour de cassation for the appointment of an expert to carry out the assessments provided for in 1° and 2° of II of this Article. These assessments are carried out by the expert on the date on which the decision was taken to subject the person concerned to a measure provided for in sub-section 10 or sub-section 11 of section 4 of this chapter.