Please check here if you need a visa to visit Germany: https://www.germany-visa.org/
See also the information from our International Office at DESY:
https://welcome-services.desy.de/international_office/visa_for_other_countries/index_eng.html
Please contact Inna Henning (inna.henning@[spamnot]desy.de) if you will need a letter of invitation from us. She will be happy to help with what visa you will require or whether any existing visa you hold would be appropriate for this visit.
