1. The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404. LHC Performance Projection 1HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Oliver Brüning BE-ABP CERN Thanks to Mike Lamont and Lucio Rossi

2. The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404. HL-LHC WP2 Task Leader Meeting, 11 th June 2013

3. Oliver Brüning BE-ABP CERN 3HL-LHC WP2 Task Leader Meeting, 11 th June 2013 130 days/year in the year following a long shutdown 130 days/year in the year following a long shutdown 160 days/year in nominal long year 160 days/year in nominal long year 0.2 Hubner factor up to LS3 0.2 Hubner factor up to LS3 25 ns BCMS for run II - 1.4e34 max. in 2015 25 ns BCMS for run II - 1.4e34 max. in 2015 25 ns ultimate intensity for run III 25 ns ultimate intensity for run III Assumptions:

4. Oliver Brüning BE-ABP CERN 4HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Low emittance Beams from the PS 50 and 25 ns options (BCMS Batch Compression, Merging and Splitting) Tested at end of 2012 run (50ns case shown below) Robustness and operability still to be proven 1.5 micron 2.5 micron BCMS Nominal 50 ns Test 4 th December – Emittance from CMS luminosity

5. Oliver Brüning BE-ABP CERN 5HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Beam from injectors LS1 to LS2 Heiko Damerau, Steve Hancock, Alan Findlay BCMS = Batch Compression, Merging and Splitting  Almost a factor 2 gain in Beam Brightness at the ‘cost’ of 10% less bunches! of 10% less bunches! Bunch intensity [10 11 p/b] Emittance [mm.mrad] Exit SPS Into collisions 25 ns ~nominal 27601.152.83.75 25 ns BCMS25201.151.41.9 50 ns13801.651.72.3 50 ns BCMS12601.61.21.6

6. Oliver Brüning BE-ABP CERN 6HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Post LS1 – LHC potential performance 6.5 TeV 1.1 ns bunch length 150 days proton physics, HF = 0.2 85 mb visible cross-section * different operational model – caveat - unproven All numbers approximate Number of bunches Bunch intensity LHC [1e11]  *X/  *sep/ Xangle Emit LHC [  m] Peak Lumi [cm- 2 s -1 ] ~Pile-up Int. Lumi per year [fb -1 ] 25 ns27601.1555/43/1893.750.93 x 10 34 25~24 25 ns low emit 25201.1545/43/1491.91.7 x 10 34 52~45 50 ns13801.642/43/1362.5 1.6 x 10 34 level to 0.8 x 10 34 87 level to 44 ~40* 50 ns low emit 12601.638/43/1151.6 2.3 x 10 34 level to 0.8 x 10 34 138 level to 44 ~40*

7. Oliver Brüning BE-ABP CERN 7HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Performance from injectors 2012 Bunch spacing [ns] Protons per bunch [ppb] Norm. emittance H&V [microns] Exit SPS 501.7 x 10 11 1.8 251.2 x 10 11 2.7 N.B. the importance of 50 ns in the performance so far. This at the expense of high pile-up. (And they are in the process of re-inventing themselves again) N.B. the importance of 50 ns in the performance so far. This at the expense of high pile-up. (And they are in the process of re-inventing themselves again)

8. Oliver Brüning BE-ABP CERN 8HL-LHC WP2 Task Leader Meeting, 11 th June 2013 LHC performance: summary 2012 Number of bunches1380 Given by 50 ns Bunch spacing50 ns Exploiting important advantage that high bunch intensities bring (luminosity proportional to I b 2 ) No electron cloud effect Bunch intensity1.7e11 ppb 150% of nominal NB can collide these intensities without problems!!! (but with less long range BB) Total intensity2.2e14 70% of nominal – some issues observed Normalized emittance2.5 microns 67% of nominal – again injector performance and ability to conserve PSB-PS-SPS(-LHC) Beta*60 cm Aggressive, exploiting: Available aperture and machine quality Tight collimator settings Stability

9. Oliver Brüning BE-ABP CERN 9HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Availiability Alick Macpherson 9

10. Oliver Brüning BE-ABP CERN 10HL-LHC WP2 Task Leader Meeting, 11 th June 2013 RLIUP : Review of the LHC and Injector Upgrade Performance Review the expected performance evolution based on the Run-I experienceReview the expected performance evolution based on the Run-I experience Compare different upgrade implementationsCompare different upgrade implementations Update the shut down planning for the LHC, it’s injector complex and the experiments in view of the above and create ONE coherent plan (LINAC4, LIU activities, experiments, LHC etc) Update the shut down planning for the LHC, it’s injector complex and the experiments in view of the above and create ONE coherent plan (LINAC4, LIU activities, experiments, LHC etc)

11. Oliver Brüning BE-ABP CERN 11HL-LHC WP2 Task Leader Meeting, 11 th June 2013 RLIUP : Review of the LHC and Injector Upgrade Performance Operation of LHC as it is, with normal consolidation Operation of LHC as it is, with normal consolidation Upgrade: Upgrade: Addition of PIC : Performance Improving Consolidation (  1000-1200 fb -1 ) Addition of PIC : Performance Improving Consolidation (  1000-1200 fb -1 ) Addition of Upgrade Scenario 1 (  2000 fb -1 ) Addition of Upgrade Scenario 1 (  2000 fb -1 ) Addition of Upgrade Scenario 2 (  3000 fb -1 ) Addition of Upgrade Scenario 2 (  3000 fb -1 ) The same scheme applies for LIU

12. Oliver Brüning BE-ABP CERN 12HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Review Program: Session 1: Experiments experience and expectations Session 1: Experiments experience and expectations Mike Lamont and Austin Ball Mike Lamont and Austin Ball Session 2: Performance after LS1 and once Linac4 is connected to the PSB Session 2: Performance after LS1 and once Linac4 is connected to the PSB Gianluigi Arduini and Stephen Hancock Gianluigi Arduini and Stephen Hancock Session 3: PICs and Upgrade scenario 1 Session 3: PICs and Upgrade scenario 1 Malika Meddahi and Lucio Rossi Malika Meddahi and Lucio Rossi Session 4: Upgrade scenario 2 Session 4: Upgrade scenario 2 Brennan Goddard and Roland Garoby Brennan Goddard and Roland Garoby Session 5: Ion related upgrade plans Session 5: Ion related upgrade plans Massimiliano Ferro-Luzzi and Oliver Brüning Massimiliano Ferro-Luzzi and Oliver Brüning Session 6: Summary and Conclusions Session 6: Summary and Conclusions

13. Oliver Brüning BE-ABP CERN 13HL-LHC WP2 Task Leader Meeting, 11 th June 2013 Upgrade matrix (for discussion)

14. Oliver Brüning BE-ABP CERN 14HL-LHC WP2 Task Leader Meeting, 11 th June 2013