LHC Performance Workshop - Chamonix 2010

Session

Session 9 - Additional LHC upgrade scenarios

S09

29 Jan 2010, 08:30

Chamonix

45. Parameter space beyond 10³⁴

Frank Zimmermann

29/01/2010, 08:30

The parameters available (intensities, betas, crossing angles), the relationship between them, the constraints and challenges for each parameter, the possible ranges that could be explored, and different optimization strategies.

46. Implications of higher intensities in the LHC

Ralph Assmann

29/01/2010, 08:55

One route to higher performance is to increase the number of bunches or the bunch intensities, or both. What are the implications for the hardware systems of the machine (RF, collimators, beam dump, injection, cryogenics, and magnets)?

47. Crab Cavities

Rama Calaga

29/01/2010, 09:20

With lower betas or longer bunches, luminosity loss due to the crossing angle becomes important. Crab cavities could minimize the loss. What are the scenarios for a crab cavity implementation in the LHC, the expected performance gain, hardware implications, R&D plan, the open questions (noise, machine protection, impedance?), issues with space for crab cavities and the auxiliary equipment...

48. Luminosity optimization and leveling

Jean-Pierre Koutchouk

29/01/2010, 10:15

How can the effective LHC luminosity be optimized by complementary measures, like beam-beam compensation (long-range, head-on?) and luminosity leveling (various schemes)? Which are the merits and challenges of each measure? Are there lessons for the upgrade strategy?

49. What do the experiments want?

Marzio Nessi

29/01/2010, 10:40

With the above in mind, which is the preferred upgrade strategy of the LHC experiments? Which upgrades are planned by the experiments, and how do these constrain the LHC upgrade paths?

50. Comparison of integrated luminosities

Mike Lamont

29/01/2010, 11:05

With the above in mind, and under certain assumptions of machine availability, and turnaround, what monthly integrated luminosities could we expect for various scenarios (e.g. with or without IR upgrade, with or without injector upgrade at various times)?