1. Pictorial Damping Ring DC03 Layout (A. Wolski, M. Korostelev)

2. Damping Ring DC03 Layout including dimensions (from Lattice) Extraction (to 78.5 m To last Septum) Chicane (to 447 m) 100 Arc Cells @ 21.2m Wiggler Section from: ( -229 m to -601 m) 100 Arc Cells @ 21.2m RFC Section from: ( 30 m to -62 m) Injection (from -79 m To First Septum) Lattice Datum Chicane Extract next slide

3. Damping Ring DC03 Layout including dimensions Circumference Chicane +ve ‘Z – Axis  +ve ‘X-Axis direction 

4. ILC Central Region Layout: BDS Positron side BDS Electron side Z- Axis 50 m ‘off-set’ Anamorphic Scale X-Axis I.P. Note Damping Ring location relative to I.P.!!

5. AutoCAD Damping Ring DC03 Layout: Work in progress (10/07/2009 snapshot). ACAD data available on request. READ NOTE FROM THIS TO (Following Slide):

6. AutoCAD Layout (J. Osborne, CERN): Damping Rings South or North of I.P.? (U.K. works on Northside). 1000m?? Currently too fluid to answer.

7. Damping Ring DC03 Layout questions: Note the above is the revised 6.4km circumference Damping Ring layout. The 3.2 km layout is approximately half the size with the components in the ‘same relative position’ (count differs). This information needs to be propagated to RTML WorkGroup (N. Solyak). Nikolay will then be able to advise on the off-set (Physics constraints rather than Physical). Start discussion about number off shafts, their size and location. Water supply and power supply routes should now be easier to identify. AutoCAD details (DC03 layout) will be finished soon to e-mail to CF&S if required (done). Any other comments or points omitted? You got to love Whiteboards (shows how messy you are). Important figure to know is Alpha??