1 Henrik Loos 1 13 Sep 2011 APE Meeting Recent Activities H. Loos 09/13/2011

2 Henrik Loos 2 13 Sep 2011 APE Meeting Activities FACET Bunch length monitor commissioning LCLS HLA for FACET THz source simulation Software development MAD deck parser for Matlab Accelerator agnostic HLAs Spatial 2D transition radiation simulation LCLS LEM server Transport matrix measurement Ultra-fast emittance measurement Undulator BBA studies

3 Henrik Loos 3 13 Sep 2011 APE Meeting FACET BLM & OTR Screens Ample signal from pyro with properly setup beam Absolute bunch length calibration needed Cameras suffer from higher radiation environment at FACET Display by J. Yocky

4 Henrik Loos 4 13 Sep 2011 APE Meeting LCLS HLSs for FACET Wire scan, emittance, profile monitor, correlation plot, Matlab model

5 Henrik Loos 5 13 Sep 2011 APE Meeting Data from A. Fisher & Z. Wu FACET THz Experiment Simulations of spectrum and beam size Measured spectrum Simulated spectrum Water absorption Vertical Size 2.4 µm Horizontal Size 2.9 µm λ = 100 µm

6 Henrik Loos 6 13 Sep 2011 APE Meeting 2D Transition Radiation Simulation Laguerre-Gauss Modes for radiation propagation Original only 1 angular mode for both polarizations each Inaccurate results for eccentric electron beams Use multiple angular modes for true 2D calculation TR 1D CalculationTR 2D Calculation 1mm x 250 um e-beam

7 Henrik Loos 7 13 Sep 2011 APE Meeting Transport Matrix Measurement Measure jitter orbits or phase space grid oscillations Non-invasive jitter measurement Generate grid in normalized phase space with two correctors

8 Henrik Loos 8 13 Sep 2011 APE Meeting LTU Matching Prediction Predict lattice functions in LTU from LI28 emittance measurement and R-matrix measurements

9 Henrik Loos 9 13 Sep 2011 APE Meeting Fast Emittance Measurement Orbit bump at wires in LI28 Emittance in 1 plane < 10s Agrees with scanning wire

10 Henrik Loos Sep 2011 APE Meeting Undulator BBA Studies Try BBA at single energy Girders don’t move much, only BPM offsets Fit launch & linear offset slope Compare with BBA offsets with K. Bertsche, H.-D. Nuhn, F. Peters