Daniel Schulte(CERN), Kiyoshi Kubo(KEK), Peter Tenenbaum(SLAC)
Description
This workshop will address the issues of the low emittance transport in the ILC
from the damping ring to the interaction point and beyond. A number of issues
will be addressed
- lattice design,
- alignment and tuning studies for all sub-systems,
- feedback considerations,
- integrated performance simulations,
- tolerances and
- instrumentation requirements.
Conference room: 354-1-001 for all sessions but Friday afternoon
In order to register send an email to Muriel Macchi (muriel.macchi@cern.ch) before January 15. The email should give your full name, institute, address and
nationality; this is needed to provide the access cards. Please indicate if you
want to participate to the banquet and if a cheese fondue would be acceptable
for you.
This workshop is supported by the EU via ELAN and EUROTeV.
Lattices – since we are supposed to be well along in developing these, if not actually finished, this should be a short description of the status and the location of the current lattices. Goal is to ensure that all simulation jocks have up-to-date lattices and know how to use them and where to get them if updates occur. As part of this we can discuss the issues related to the curved linac (matching the dispersion into/out of the linac, representing the curvature in the lattice file, etc.)
1
D. Schulte: Introduction
Slides
10:30
coffee break
Main Linac Studies 1
Main linac tuning techniques – we want independently-prepared versions of our algorithms to give convergent results; we want to understand the limitations of the algorithms as they are (what are the oversimplifications, etc); we want to understand whether these techniques will work on a continually-curved lattice. Goal is to ensure that our tuning techniques actually work (by having independent versions of them which agree) and to define the work that still needs to be done on each of them. To this end we probably need a short presentation from each simulator on what their results are for some given set of inputs (the DFS is already going in this direction), and what their simplifications are, followed by discussion when it turns out they don’t agree. The techniques are BA, DFS, KM.
2
P. Lebrun: LET studies at Fermilab
Slides
3
F. Poirier: Dispersion Free Steering for the ILC using Merlin
Slides
4
A. Latina: Steering the main linac with different bunch compressor settings
5
J. Smith: Benchmarking of dispersion free steering
Slides
12:30
lunch break
Main Linac Studies 2
6
P. Eliasson: An update on main linac tuning bumps
Slides
7
D. Schulte: Some Remarks on Disperison Free Steering and Beam Jitter
Slides
8
K. Kubo: Beam Based Alignment Simulations
Slides
9
K. Kubo: Curved linac studies update
Slides
10
D. Schulte: Simulations of a curved tunnel
Slides
11
R. Jones: Longrange Wakefields and their Effect in the Main Linac
Polarization – what simulations of spin transport have been done so far, and what more needs to be done?
16
J. Smith: Polarisation studies with BMAD
Slides
17
I. Bailey: Spin tracking studies by the heLiCal collaboration
Slides
18
P. Schmid: Spin rotator work
Slides
10:30
coffee break
Polarization 2
12:30
lunch break
Instrumentation Requirements 1
We need to define the performance requirements of the intrumentation. This requires that we agree on a common model of the intrumentation. An example of typical questions will be the resolution of the BPMs, their long term stability, the linearity, the efrfects of varying beam currents etc.
This session will be a video meeting, which allows other grouos to join. Connection details will be determined soon.
