Issues from last Meeting (June 14)
|OBLA phase-I, case 3: tune solenoids to match beamsize of Homdyn simulation (MP)
||Changed SP3 to 43 mT, call it case 3a and repeat all studies
|Centroid position in misalignment studies (MP)
||Added centroid position to plots (below beam size and emittance)
|Need "realistic" simulation (duetto laser): 6.5 ps pulse length (Guassian), 1 A (FLP)
||Simulated gun for 22.5 ps uniform (Gaussian not possible in IMPACT-T), played around with
SP1 and SP3/SP4, tried to find emittance minimum coincident with beam waist
|Need to check convergence of IMPACT-T simulation with decreasing time step (RB?)
||Reran case 1 with 100 fs timestep (10 fs in gun) - results are identical.
|Can IMPACT-T simulate a non-planar cathode? (MP)
||No. Would require substantial change of code.
To do list (simulations)
Write-up of simulation results corresponding to document
(i.e. case 1, 2, 3 and 3a).
Simulation of pepper pot (Volker).
Idea: Dump phase space of bunch at a screen location, run a selection function
on the phase space distribution and create a restart file from only those
particles that pass the function (the pepper pot). Then restart simulation
from this file. (This approach will neglect image charge in the pepper pot,
as well as space charge effects from particles before the pepper pot acting
on particles after the pepper pot...).
IMPACT-T simulation of dipole bend (Andreas Streun).
Make usage of IMPACT-T more user-friendly and accessible to others.
In the long run, switch to OPAL, a C++ program supposed to replace IMPACT-T
at some point.
Other stuff I work on
Development of analysis software for "real-time" emittance measurement at OBLA
A GUI allows the user to grab a pepper pot image from a camera, interactively
adjust the analysis parameters and run the emittance evaluation at the click
of a button. (In collaboration with Simon Leemann as long as he is still here.)
Maintenance and development of
a visualization tool based on
Finish work on emittance growth from beam-gas scattering.
Detailed comparison with calculation in Reiser.
Interesting paper on this topic spotted at PAC07 (in context of plasma
Development of OPAL framework.
Toy Monte Carlo simulation for proposed muon EDM experiment at PSI.