1. So many simulations, so few (understood) results
Code Edited From Jochem Snuverink
Ryan Bodenstein
FONT Meeting
2015/12/11

2. Preview Offset study results
Now have results for 3 TeV machine and two 380 GeV machine setups (L*=4.3 m, 6 m)
Getting maximum luminosity with small offset from dead-on collision
Not sure why. Looks like donut beam, but it’s not.
Sent to Fabien Plassard, who designed the lattice. No reply yet.
Also doing the single-beam tuning part of the two-beam tuning studies.
Currently running Iteration 3 out of 5 for the normal setup (as done previously for 3 iterations)
Also running Iteration 1 for a setup with no second DFS tuning stage, which has never been done.
Wrote IPAC16 abstract and submitted.

3. For a 3 TeV setup

4. For a 3 TeV setup

5. For a 3 TeV setup

6. After adjusting the grid
For a 3 TeV setup
After adjusting the grid

7. After adjusting the grid
For a 3 TeV setup
After adjusting the grid

8. After adjusting the grid
For a 3 TeV setup
After adjusting the grid

9. For a 380 GeV setup

10. For a 380 GeV setup

11. For a 380 GeV setup

12. For a 380 GeV setup (L*=4.3 m)

13. Zoomed in to the central (low-offset) region.
For a 380 GeV setup (L*=4.3 m)
Zoomed in to the central (low-offset) region.

14. For a 380 GeV setup (L*=4.3 m)

15. Zoomed in to the central (low-offset) region.
For a 380 GeV setup (L*=4.3 m)
Zoomed in to the central (low-offset) region.

16. For a 380 GeV setup (L*=4.3 m)

17. Zoomed in to the central (low-offset) region.
For a 380 GeV setup (L*=4.3 m)
Zoomed in to the central (low-offset) region.

18. For a 380 GeV setup (L*=6 m)

19. For a 380 GeV setup (L*=6 m)
Half scan, from 0 offset a point past where the absolute value of the deflection angle starts to decrease.

20. For a 380 GeV setup (L*=6 m)

21. For a 380 GeV setup (L*=6 m)
Half scan, from 0 offset a point past where the absolute value of the deflection angle starts to decrease.

22. For a 380 GeV setup (L*=6 m)

23. For a 380 GeV setup (L*=6 m)
Half scan, from 0 offset a point past where the absolute value of the deflection angle starts to decrease.

24. Luminosity After Tuning Stages (3 TeV)
Single Beam Tuning
Luminosity After Tuning Stages (3 TeV)

25. % Seeds reaching Nominal Luminosity
Single Beam Tuning
% Seeds reaching Nominal Luminosity

26. IPAC16 Abstract

27. More Plans
Have started looking at IP Feedback luminosity recovery simulations
Very initial stages. Promising start, but there are a few hiccups in the code.
Code was unexpectedly better than expected, just a few minor points (we think) to correct, likely after the holidays.
Still looking into why perfect collisions don’t make the highest luminosity (but still close).
Doing 5 full iterations of tuning study with various DFS, Knobs, etc…
Doing the first tuning study with only 1 stage of DFS tuning.