Choose timezone
Your profile timezone:
iFAST 5.3 (Slow Extraction) - December Meeting
→
Europe/Zurich
CERN SPS
- Simulation work focuses on loss reduction and spill quality
- Need to track with crystal and through matter (PyCollimate being used and work ongoing to clean it and make it GPU-ready)
- Interest in accurate phase-space description for TL tracking
- Looking at Physics Informed Neural Networks for simple tracking
- Not so easy to get beam time
- Using MapTrack (SPS) → moving to Xsuite
CERN PS
- Need to do tracking in all six dimensions, can’t approximate
- Easier to get beam time
- Beam dump allows operation in parallel to physics
- PS can be used to benchmark simulation methods
CNAO
- Aim to characterise beam phase-space at extraction, to design gantries
- Mostly using MADX, looking to use PTC (already used for gantry designs, not synchrotron)
- Will also be using Xsuite
- New student to join soon and to start on RFKO simulations and port to Xsuite
GSI
- Accelerators: GSI-SIS18, SIS100, HIT
- Interested in Nano(10-100ns), Micro (10 us), and Macro (100ms) spill structure
- Interested in simulating beam loss on septum wires, magnetic field errors, transit time, and tune distributions
- Using Xsuite to simulate, also MADX and Elegant (developed at APS)
- Interest in RFKO
- Already seeing improvements using Xsuite over MADX, at spill lengths of 1.5 seconds
CERN SEEIIST + NIMMS (Medical)
- Focussed on PS, beam loss reduction on the septum
- Using MapTrack (Rebecca Taylor)
- Looking at RFKO
- Different methods of extraction, flexibility for high intensity, short spills (FLASH)
- Interested in higher order effects
- Can Xsuite work with fixed-field accelerators? Dynamic tune measurements?
- Requirements: ~1 million turns in ~8 hours
MedAustron
- Proton/Carbon Medical synchrotron
- Interested in RFKO and COSE
- Optimise SX methods and parameters for spill structure (10s spill) and intensity ripple reduction
- Multi Energy Extraction with COSE/RFKO (RF cavities)
- Extracted beam ripples (magnets/cavities ripple effects)
- Beam losses
- Mainly using MADX/cpyMad for RFKO, Xsuite for dynamic effects, BLonD
- Looking at ripples in RFKO
- Need 10^6 turns, 10^4 particles
- Requirements:
- Handling 10^4 particles for 10^6 turns
- Noise/ripple, TbT magnet trimming, deferred expressions, and longitudinal effects from cavities
- Recording tune change during extraction
- Time dependency
Needs for XSuite
- Topics touched which are already usable in Xsuite:
- Virtual sextupole strength
- Septum with aperture at both sides (black absorber)
- Noise and custom RF (Pablo and GSI to make simple example to add to Xsuite doc)
- Open points:
- Porting PyCollimate (action for CERN-ABT)
- Field Tracking Maps => already have 2D time dependent map, implemented in a symplectic way
- discussion started for 3D maps (check with Gianni)
- Make simple example and upload on Xsuite doc page
- SX optimisation: best practice and what different labs do
There are minutes attached to this event.
Show them.
