CERN Accelerating science

Article
Title	Establishing a Collaborative Planning Procedure for the XFEL
Author(s)	Hagge, Lars ; Bürger, Jochen ; Jähnke, Katharina ; Lappe, Kathrin ; Schwarz, Andreas S ; Stoye, Thorsten ; Welle, Norbert
Affiliation	(DESY, Hamburg)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.961
Subject category	Accelerators and Storage Rings
Abstract	Building a new accelerator requires a consistent common design of the entire complex, including machine, tunnels, buildings and infrastructure. The efforts involve experts from many disciplines. Complication arises as different expert groups are contributing at different project phases: buildings and technical infrastructure are constructed first, thus their design has to be fixed early in the project and is then imposing constraints e.g. on the machine layout while accelerator R&D is still being continued. In view of these challenges, a dedicated planning and design procedure has to be established which provides “just-enough” details where needed while preserving maximum flexibility for other subsystems, and which can also manage later changes if they become necessary. The poster presents experience from planning the XFEL. Expert groups can create and maintain separate design models of their components, which at the same time can be combined into a common overall design model. The planning procedure relies on commercial tools used in industry (specification database, engineering data management and 3D CAD systems) which are being adapted to the culture and organization of HEP collaborations.