Session D4 - Physics at the Energy Frontier II.
INVITED session, Saturday afternoon, May 01
Plaza F, Adam's Mark Hotel

[D4.001] Physics Complementarity of the LHC and LC

Physics at the LHC and a future e^+ e^- Linear Collider will be complementary in many respects, similarly to the situation at previous generations of hadron and lepton colliders. While qualitatively this is obvious, a more quantitative account of the mutual benefits of the physics program at both machines requires detailed studies. For this purpose the LHC / LC Study Group has formed as a world-wide working group. It investigates the possible interplay between LHC and LC and studies in particular the synergy effects arising from concurrent running of the two machines. The main results obtained within the LHC / LC Study Group so far are briefly summarized.

[D4.002] US LHC Accelerator Ramp;D Program

The United States National Laboratories are currently building advanced accelerator equipment and providing technical support for the construction of the Large Hadron Collider at CERN. This work included state of the art superconducting quadrupoles, beam separation dipoles, cryogenic feedboxes, and specialized absorbers for the interaction regions; testing and other support for the production of superconducting cable for the main LHC magnets; and accelerator physics studies. This collaboration will be extended beyond the construction phase, to address machine commissioning, funamental accelerator physics using the LHC, and Ramp;D on advanced accelerator instrumentation and beyond the state of the art superconducting magnets for future upgrades to the LHC. In this talk I will summarize the status of the U.S. effort on the construction of LHC, and describe the future Ramp;D plans.

[D4.003] RF Technology for a Linear Collider

This year the ICFA-sponsored International Technology Recommendation Panel will down-select an rf technology to be used for the main linacs in a next generation linear collider. A choice will be made between the cold technology of the TESLA proposal, which employs superconducting, L-Band (1.3 GHz) accelerator cavities, and the warm technology of the NLC and GLC proposals, which employ room temperature, X-band (11.4 GHz) accelerator structures. The choice of a warm or cold approach has major implications not only for the rf systems, but for the challenges faced in generating and preserving the small beam emittances that are required. This paper will focus on the rf systems, in particular, a review will be given of the designs, the Ramp;D programs and the risks associated with achieving the beam energy goals in each case.

[D4.004] The US LC Technology Comparison Study

At the request of the United States Linear Collider Steering Group (USLCSG), a study has been carried out to evaluate two options for a high-energy electron-positron linear collider sited in the United States. One option is based on normal-conducting X-band rf technology, similar to the design of the GLC/NLC Collaboration. The other option is based on superconducting L-band rf technology, similar to the design of the TESLA Collaboration. The reference designs for both options satisfy the physics-based machine requirements specified by the Physics/Detector Subcommittee of the USLCSG. Both options were developed in concert, using, as much as possible, similar approaches in technical design for similar accelerator systems, and a common approach to cost and schedule estimation, reliability design and evaluation, and project risk assessments. This talk will present the results of the study.

[D4.005] Large Extra Dimensions

This abstract not available.

Part D of program listing