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| Report/Contribution to a conference proceedings | PUBDB-2016-02833 |
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1997
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Please use a persistent id in citations: doi:10.3204/PUBDB-2016-02833
Report No.: DESY-M-97-10G
Abstract: For the SB-Linear-Collider project (SBLC) at DESY a redesign of the damping ring has been performed, mainly in order to optimise the dynamic aperture. The lattice of the proposed damping ring has a DBA structure, similar to the 3rd generation light sources ESRF, APS and SPRING-8. The damping ring is build up with 6 superperiods. The straight sections between these periods are used for the injection,ejection and rf-cavities. In turn, each superperiod consists of 6 DBA cells. The straight sections of these cells are used for the installation of the wigglers, which are needed for the damping. With the installation of overall 150 m of wigglers (B$_0$ = 2 T and $\lambda_0$ = 0.2 m) the equilibrium emittances are $\epsilon_{x,0}$ = 6.5 $\centerdot$ 10$^{−10}$ m $\centerdot$ rad and $\epsilon_{y,0}$ = 1.3 $\centerdot$ 10$^{−11}$ m $\centerdot$ rad (the corresponding normalised emittances are : $\epsilon_{x,n}$ = 3.8 $\centerdot$ 10$^{−6}$ m $\centerdot$ rad and $\epsilon_{y,0}$ = 7:6 $\centerdot$ 10$^{−8}$ m$\centerdot$rad . The damping time results in $\tau_y$ $\leq$ 3.4 ms. The dynamic acceptance including misalignment and magnet errors is in the range of A$_x$ $\leq$ 72 mm $\centerdot$ mrad and A$_y$ $\leq$ 80 mm $\centerdot$ mrad.
Keyword(s): talk: Vancouver 1997/05/12 ; electron positron: linear collider ; linear collider: proposed ; storage ring: beam damping ; wiggler ; storage ring: lattice ; beam emittance ; alignment ; beam instability ; numerical calculations
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