MD discussion

Monday 7 May 2018, 11:00 → 13:00 Europe/Zurich

Ewen: Amplitude detuning measurements in 2018 show too large value in the Beam 1 direct terms. Beam 2 to be analyzed. To check: settings of b4 IR1 and IR5 corrs. 2 hypothesis: crossing angles (CMS bump) and a4 affecting b4 settings (action: ask Ezio).  

 

Next meeting: Jaime IP phase advance + DOROS, Ana/Michael Kmod final values.

a4 existing corrs in flat, or measurement?  Minimum flat MD goal amp det meas.

 

 

MD requests for 2018:

-Luminosity waist scans. MD1 or MD2

-K-mod, MD1 (waist knob?)  (joined with flat?, round optics MD), Simultaneous Q1L Q1R modulation. W

-Amplitude detuning: Flat orbit and possible new b4 corrections (role of CMS bump?). MD1

-Eof or dedicated: Removing non-lin corrs.

-a4 new correction.

-b5 & b6 exploration: chancing tunes, amp det Vs H crossing in IP1

-HL-LHC DA with driven and free.

-DA of current LHC (new a4 corrs), possibly joined with HL-LHC DA MD.

-HSC: removing one side of b4 impact on instabilities. Maybe high when b4 issue solved

-Techniques to measure ADeCTA: +corona beam CTA  + ADT individual beam kicks. INJ

-FCC b3 level DA + RDT. INJ.  

-MCD issue at injection (1/2 powering?? at injection), low priority. 

-Andreas, Mobius accelerator: Needs matching, hoping for swap in 1 arc. Low priority

-Local observable MD: new optics with max number of npi phase advances. Existing ATS arcs might be used for this, to be checked.

-ballistic ???

 

Missing people MDs: Tobias, Lukas (3D kicks), Felix (a4, b5).

 

 

11:00 → 11:20 Moebius MD

Speaker: Mr Andreas Wegscheider (Hamburg University (DE))

MD.pdf