Beam Physics Meeting

Wednesday 7 May 2008, 16:00 → 18:00 Europe/Zurich

1/1-025 (CERN)

Participants: K. Elsener, A. Dabrowski, L.Rinofli, D.Schulte, **, Y.Paphilippou, R.Tomas, O.Mete, J.B.Jeanneret, I.Ahmed, E. Adli DS: * New fellow arrive in July to replace Andrea * Peder Eliasson: defended his Thesis very well * Next week CLIC/ILC collaboration meeting * CLIC ACE Early september KE: Summary of Post-Collision Beam Diagnostics * For CLIC: V. Ziemann has written a EuroTEV report: 2008-016 - proposals to equip dumps with detectors, initial proposal with pin-diodes, but will be looked int further (e.g. bad experience using pin-diodes at LEP, JBJ) - proposal to convert beamstrahlung photons to muons at start of water dump, * Other ideas discussed (for ILC as well) - use BPMs, and look at signal distortion - CERN proposal: photon + thin converter + OTR EA: Outlooks for CTF3 steering: * tested different steering algorithms with machine-based response only * suggestions for model based steering: - Model for 1-to-1: only needs energy - Bad optics: doesn't matter, if you know the twiss at a couple of places - bad response: still helps with many iterations (with gain lower than 1) - change the energy to find BPM misalignments (just change gun current, nothing else) - take into account current jitter: assume "simple formula" instead of spread-sheet calc IA: * presented benchmarking of PLACET and DIMAD * good agreements for E > 300 GeV EA, 7-may-2008