Cal. Welfare and Institutions Code § 1755.5

The Department of the Youth Authority may transfer to and cause to be confined in the medical facility, the Correctional Training Facility at Soledad, the California Institution for Women at Corona, the Medical Correctional Institution, the California Institution for Men, the Richard J. Donovan Correctional Facility at Rock Mountain, or the California Men’s Colony under the jurisdiction of the Department of Corrections for general study, diagnosis, and treatment, or any of them, any person over the age of 18 years who is subject to the custody, control, and discipline of the Department of the Youth Authority who was committed to the Department of the Youth Authority under Section 1731.5. The Director of Corrections may receive and keep in any institution specified in this section any person so transferred to that institution by the Department of the Youth Authority, with the same powers as if the person had been placed therein or transferred thereto pursuant to the Penal Code. The Department of the Youth Authority may transfer to and cause to be confined in the California Rehabilitation Center for general study, diagnosis, and treatment, or any of them, any person over the age of 18 years who is subject to the custody, control and discipline of the Department of the Youth Authority. The Director of Corrections may receive and keep in the California Rehabilitation Center any person so transferred thereto by the Department of the Youth Authority, with the same powers as if the person had been placed therein or transferred thereto pursuant to Division 3 (commencing with Section 3000) of this code. Part 3 (commencing with Section 2000) of the Penal Code, so far as those provisions may be applicable, applies to persons so transferred to and confined in any institution specified in this section, except that, whenever by reason of any law governing the commitment of a person to the Department of the Youth Authority the person is deemed not to be a person convicted of a crime, the transfer or placement of the person in the California Rehabilitation Center shall not affect the status or rights of the person and shall not be deemed to constitute a conviction of a crime.