Access management in the ATLAS TDAQ

In the Trigger and Data AcQuisition (TDAQ) system for the ATLAS project authorization of users will be an important task. The main goal of the authorization will be to reduce the chance of potentially dangerous actions being made by mistake. An Access Management (AM) component is being developed within the TDAQ to handle these issues. This paper presents the design and implementation of the component. It also describes the authorization model used and how authorization data is stored and administrated for the system.