DICOM PS3.3 2019c - Information Object Definitions
C.8.8.25.2 Treatment Machine Name

The DICOM Standard does not support the transmission of treatment unit modeling information such as depth doses and beam profiles. In the case of Ion therapy, the Treatment Machine Name Attribute is used to uniquely identify a treatment port (or beam line), since there is in effect only one treatment machine (i.e., synchrotron).

DICOM PS3.3 2019c - Information Object Definitions