Belogurov, S.

Kunkel, J.

Sanchez Rosado, J.

GSI Repository

Status of the CBM STS CAD designJochen Kunkel1, Sergey Belogurov2, Jorge Sa´nchez Rosado1 for the CBM STS collaboration1GSI, Darmstadt, Germany; 2ITEP, Moscow, RussiaA virtual model of the planned CBM STS detector sys-tem gets designed in the CATIA CAD software in full de-tail [1]. It is used to visualize the space dependencies ofall sub-systems like mechanics, electronics and cooling. Inthis report the status of the work on this model is shown.RepositorySeveral people of the CBM STS collaboration work withthe CAD model. Since they work in different institutes allover the world a platform was needed to enable collabora-tive work. As control system Subversion was chosen be-cause of the instant availability and the ease of use. GSIhosts a Subversion server on which all CAD files are nowlocated. This Repository not only gives access for every-body involved but also brings file versioning and backup.Sensor layoutThe sensor layout has been improved in the area aroundthe beampipe and in the outer edges at the large stations. Tooptimise the amount of different parts and lengths of cablesthe readout electronics have been re-arranged to appropri-ate positions (see Fig. 1 and Fig. 2). Now only 16 differentlengths of carbon ladders are needed.Figure 1: Detailed view of the upper end of ladders. Spacebetween uppermost sensor and electronic not optimised forcables lengths (not shown).Cooling platesThe detailed construction of the cooling plates hasstarted (see Fig. 3). Different manufacturing methods andtheir influence to the shape of the plates were considered.Figure 2: Detailed view with re-arranged electronics. Dis-tances between sensors and electronics shorter and moreregular.Two special joining processes (with and without additionalmaterial) for aluminium are tested. At first two differentsizes of plates are designed to prove the desired coolingpower, pressure stability and the reliability of the produc-tion process.Figure 3: Semi-transparent view of a cooling plate. Lengthof inside channel is more than 5 m, cross section 4× 4 mm.Connectors will be at the upper right corner.References[1] S. Belogurov, A. Kolosova and J. Kunkel, CBM Progress Re-port 2013 (2014), p. 46MU-NQM-CBM-40 GSI SCIENTIFIC REPORT 201476 DOI:10.15120/GR-2015-1-MU-NQM-CBM-40

Status of the CBM STS CAD design

http://repository.gsi.de/record/183847/files/MU-NQM-CBM-40.pdf

Status of the CBM STS CAD design

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