7th Evian Workshop

Session

SESSION 3: PERFORMANCE 1

13 Dec 2016, 16:10

Hotel Ermitage

Conveners

SESSION 3: PERFORMANCE 1: SESSION 3: PERFORMANCE 1

• Alessio Mereghetti
• Giovanni Iadarola

Presentation materials

summary_session3.pdf

12. Optics control in 2016

Tobias Hakan Bjorn Persson

13/12/2016, 16:10

Main points to be addressed:
• Achieved beta-beating and DQmin level
• IP beta and waist uncertainties
• Linear optics and coupling reproducibility and evolution (Run 1 vs Run 2)
• Status of the automatic coupling correction (DOROS, ADT-AC dipole)
• Possible efficiency improvements:
o How can we speed up the process?
o How reusable are optics corrections from one year to the next?
o What...

14. Non-linear corrections

Ewen Hamish Maclean

13/12/2016, 16:30

Main points to be addressed:
• Status of non-linear corrections in the LHC
• Present and future needs for IR non-linear corrections (LHC, HL-LHC)
o Do we need them in LHC at b*=~30cm?
• Methods and MD results
• IR non-linear corrections for operation in 2017:
o Are methods and tools ready?
o What are the requirements in terms of commissioning time?

13. Experience with the ATS optics

Rogelio Tomas Garcia (CERN), Stephane Fartoukh

13/12/2016, 16:50

Main points to be addressed:
• MD results (aperture, optics correction, chromatic properties, b reach,
collimation, etc.)
• Is it ready for 2017 physics?
o Any limitation left? (phase advance MKD-TCT, CT-PPS/AFP normalised
dispersion)?
• Improvements or expected-problems with other operation modes:
o High and intermediate b runs (forward physics in 2017 and beyond)
o Ion operation (IP2...

15. Collimation: experience and performance

Daniele Mirarchi

13/12/2016, 17:10

Main points to be addressed:
• Overview on 2016 performance (and comparison vs 2015)
o Reminder of settings throughout the cycle
o Cleaning (Run1 vs Run 2)
o Aperture measurements
o Effects of MKD-TCT change of phase advance in 2016
• MDs (potential improvements for next year):
o tighter collimation settings à hierarchy limit
• Brief recap on ion experience
• (MDs for further future: crystals,...

16. Analysis of beam losses

Stefano Redaelli

13/12/2016, 17:30

Main points to be addressed:
• Different methods for lifetime estimation
• Losses in the different phases of the cycle
• Plane decomposition
• Comparison against Run 1