| Allowed Value | Details |
|---|---|
| ALBA | |
| ALS | |
| APS | |
| AichiSR | |
| Australian Synchrotron | |
| BESSY | |
| BSRF | |
| CAMD | |
| CHESS | |
| CLSI | |
| Diamond | |
| ELETTRA | |
| EMBL/DESY, HAMBURG | |
| ESRF | |
| European XFEL | |
| FRM II | |
| ILL | |
| ISIS | |
| JPARC MLF | |
| JRR-3M | |
| KCSRNT | |
| KURCHATOV SNC | |
| LANSCE | |
| LNLS | |
| LNLS SIRIUS | |
| LURE | |
| MAX II | |
| MAX IV | |
| MPG/DESY, HAMBURG | |
| NFPSS | |
| NSLS | |
| NSLS-II | |
| NSRL | |
| NSRRC | |
| NanoTerasu | |
| ORNL High Flux Isotope Reactor | |
| ORNL Spallation Neutron Source | |
| PAL-XFEL | |
| PAL/PLS | |
| PETRA II, DESY | |
| PETRA III, DESY | |
| PETRA III, EMBL c/o DESY | |
| Photon Factory | |
| RRCAT INDUS-2 | |
| SACLA | |
| SAGA-LS | |
| SLAC LCLS | |
| SLRI | |
| SLS | |
| SOLEIL | |
| SPring-8 | |
| SRS | |
| SSRF | |
| SSRL | |
| SwissFEL ARAMIS |