1. 1 ATF2 Tuning and its application to ILC and CLIC FFS/IR region ASTeC and MAN : working together on tuning methods for the ATF2 and ILC IR/extraction design The aim is to test the developed tuning procedures experimentally at ATF2 Based on the knowledge gained at ATF2, provide an important feedback to the ILC and CLIC final focus/IR tuning methods. Use presently developed simulation tools to provide optics and beam halo tracking input for the background studies.

2. 2 Emittance Tuning Simulations Developed a robust integrated simulation environment for analysis of various methods of beam tuning simulations. Simulation structure works for both ILC and ATF2 with minimal changes. Investigated traditional and more novel methods of beam tuning on ILC and ATF2. Analysis shows viable methods can be created to remove the emittance dilution effects as seen at the IP, using only the final 5 sextupole magnets. Performed further investigations into the linearity of such tuning knobs, and the limits with position and field errors on the tuning magnets. Performed tolerance studies on both the ILC and ATF2 including the effects of trajectory correction. J. Jones, A. Scarfe

3. 3 BDS Collimation Optics Design Lattice optimisation demonstrates significant improvement in collimation efficiency Collimation depths for different detector concepts, different L* covering all the parameter ranges of the ILC Collimated halo before optimisation Collimated halo after optimisation F. Jackson

4. 4 The number of particles inside the laser spot ±100 µm is 44% of its number at IP y offset (600 µm) y’ offset (12 µrad).The number of particles inside the laser spot ±100 µm is 0.1% of its number at IP. Without detector field With detector field 14 mrad baseline extraction optics To compensate the detector effect and to increase the number of particles inside the laser spot size. Include anti-solenoid, anti-DID (for different detector concepts) Include magnetic and beam errors to study the diagnostics performance and effect on beam losses at collimators D.Toprek, R. Appleby Beam at second focus

5. 5 Deliverables Participation in commissioning of ATF2 final focus system to test final focus optics design Application of various tuning procedures and tuning knobs Based on the feedback at ATF2, make necessary changes in the ILC/CLIC BDS final focus and interaction region design. These studies will include the detector solenoid field, anti-solenoid and anti-DID for realistic machine and beam errors. Studies of machine induced backgrounds arising from beam transport in the extraction line utilizing simulation tools developed for the ILC.

6. 6 FP7 Contribution + Request MAN contribution is: 12 PMR. Appleby - Faculty member – guaranteed 36 PMRA post – requires approval by lab. Negotiations in progress 12 PM – FP7 request ASTEC contribution is: requires approval by lab 12 PMJ. Jones – STFC permanent staff 3 PMF. Jackson – STFC permanent staff 3 PM D. Angal-Kalinin- STFC permanent staff 12 PM – FP7 request

7. 7 Resources (MAN) Material [€]Integrated human resources direct [€]Indirect [€][FTE·months]direct [€]indirect [€] Lab contribution (a) 0048268608163648 Requested (b) 001267152 40912 Total (a+b) 060335760204560 Resources (ASTEC) Material [€]Integrated human resources direct [€]Indirect [€][FTE·months]direct [€]indirect [€] Lab contribution (a) 0018105000110250 Requested (b) 00127000073500 Total (a+b) 0030175000183750 Travel request: 5k€ per year