LARP – Present & Near term future Tanaji Sen May 24, 2005

1. LARP – Present & Near term futureTanaji SenMay 24, 2005 Present activities Beam commissioning – better definition and more participation Near term goals

2. IR, Energy Deposition and Beam-beam accomplishments in FY05 • IR Optics design - Matched optics for both the quadrupole first and dipole first designs were developed for β* ~0.25m. - Doublet focusing with the dipole first design was also examined for the first time. • Energy Deposition with open mid-plane dipoles - Mitigated by splitting first dipole in two and placing an absorber in between • Collimation Tertiary collimators shown to mitigate against beam induced halos • Beam-beam experiments at SPS and RHIC - Wire compensation experiments at SPS. Accurate prediction of relative wire tolerance. - Experiment at RHIC showed impact of parasitic interaction at distances less than 7 sigma. Remote participation LARP - Near term goals

3. Instrumentation accomplishments in FY05 • Schottky monitor proposal for the LHC This will be the only instrument in the LHC for bunch by bunch tunes. Successful measurement of bunch by bunch tunes in the Tevatron has helped to make the case. • Tune tracker Collaboration with CERN and BNL has helped the Tevatron. The BBQ method proposed by CERN has improved sensitivity of the method. Origin of 60 Hz lines understood. LARP - Near term goals

4. Commissioning accomplishments in FY05 January ‘05: 3 AD staff were invited to CERN for the ‘Chamonix’ workshop March ’05: visit by US personnel (EH, MS, DS) to review/discuss list of tasks, plan for CERN staff visits to Fermilab, remote data sharing Spring/Summer ’05: series of visits to Fermilab by CERN/LHC operations staff to partner laboratories build relationships commence effort on Remote Monitoring discuss LHC/OP task list Remote Access: Committee charged by Director with constructing a plan for the Fermilab Remote Operations Center Preliminary report due July 2005, Final report due December 2005 LARP - Near term goals

5. LARP involvement in Commissioning CERN point of view In the present US-LARP proposal, resources are allocated for “Beam Commissioning and Accelerator Physics” activities from 2004 onwards, rising to significant numbers by 2007. In the discussions to date, we have made the point that the US-LARP commitment has to be made with long-term individual commitments of around 12 months, and that US staff should come to perform a specific role in the beam commissioning work. It has also been clearly said that CERN has to maintain sufficient expertise, particularly on shift, to ensure long-term exploitation of the machine With this in mind, we feel that a very limited number of US-LARP resources could participate in the shift rota. Rather, they would be best suited to the accelerator physics and equipment group support activities R. Bailey (CERN) LARP - Near term goals

6. Accelerator systems to be looked at • SPS extraction, transfer, injection and first turn • Multi turn losses and BIS dependability • Protection devices other than collimators • Collimation system and Halo cleaning - DS • Clean Beam Extraction • Radio protection • Beam Instrumentation - AJ, RP, CYT • Vacuum conditions during operation and electron cloud • Reference magnet system • RF systems and longitudinal beam dynamics • Transverse feedback • Experimental solenoids and compensations • Experimental equipment (Roman pots, velo) • Beam in the injectors • Ion beam in the injectors • Orbit feedback system • Filling efficiency and flat bottom conditions • Ramp and squeeze losses and overall quality • Machine protection system • Optics • Mechanical aperture • Machine Impedance and collective instabilities • Dynamic aperture • Lattice corrector settings • Triplet corrector settings • Lifetimes • Separation schemes • Crossing angle schemes • Collisions and luminosity steering • Experimental conditions • Ions Priorities needed ! • Points to address for each system • What is the specification with beam • What measurements are needed • What tools are needed • What beam is needed • How much time is needed R. Bailey, CERN LARP - Near term goals

7. Beam Commissioning - Next Steps Identify the areas of interest to you and let me know Establish contacts with the right people at CERN Become familiar with the issues and priorities Example: Dean Still’s contact with the LHC collimation group Define the FNAL contribution clearly Example: SDA type application for post-mortem analysis Continue the dialog with CERN contacts Plan for an extended stay at CERN (6 -12 months) when commissioning starts • Commissioning Strategies • R. Bailey’s and M. Lamont’s talks at the LARP Collaboration Meeting, April 05 • //cern.ch/lhc-commissioning • //cern.ch/lhc-injection-test LARP - Near term goals

8. LARP in AD – Near term plans FY05-06 • IR design: Designs for quads first, dipoles first (triplet focusing, doublet focusing) valid from injection to collision, nonlinear corrections. These will define the upgrade path. • Energy Deposition: Calculations for the different IR designs under normal and accidental conditions • Tertiary Collimators: Protection of IR components from losses at secondary collimators and beam halo • Wire compensation: Proposal for installing wire compensator in RHIC (summer 06) and beam studies to test compensation of parasitics. Submitted for DOE Review June 2005 • IR Mini-Workshop: October 5-6, 2005 3 topics: IR designs & Energy Deposition, Beam-beam compensation, Crab cavities • Schottky Monitor: Proposal to design monitor based on 1.7GHz Monitor. Submitted for DOE Review June 2005 • Tune tracker: Continuing collaboration with BNL on BBQ system • Beam Commissioning: Some contacts set up. More needs to be done • Remote Access: Hardware commissioning (?), Injector start up, Sector test, First beam LARP - Near term goals