View source for CeC Simulation Meeting

==Meeting Goals==
The CeC simulation meeting is focused on developing simulation as well as analytical tools to advance understandings of coherent electron cooling (CeC).

==Meeting Agenda==
* 09/14/2017: 
** [[media:Meeting_09_14_2017_Jun.pdf|Kicker simulations (Kicker is treated as a drift section, i.e. no quads. The beam size does no grow linearly and the emittance grows significantly, indicating some problems with the codes.)]],   by Jun Ma;
* 09/07/2017: 
** [[media:Meeting_09_07_2017_Jun.pdf|CeC simulations (Modulator and FEL simulation with reduced beam current, 40A->31A. The gain at ion is ~140. The optimal lattice functions at undulator are found with space charge effects taken into account.)]],   by Jun Ma;
* 08/31/2017: 
** [[media:Meeting_08_31_2017_Jun.pdf|CeC simulations (Modulator and FEL simulation with not-so-matched beam at undulator entrance, beta functions are a factor of two larger. The intention is to see to what extent the beam has to be matched. Current is too large and FEL saturated)]],   by Jun Ma;
* 08/17/2017: 
** [[media:Meeting_08_17_2017_Jun.pdf|Quadrupoles (Attempts to optimize quadrupoles in modulator so that beam is matched to FEL. The target lattice function does not take into account space charge effects along undulator)]],   by Jun Ma;
* 07/20/2017: 
** [[media:Meeting_07_20_2017_Jun.pdf|Modulator simulation(New energy with gamma=28.7, not matched to FEL due to space charge effects)]],   by Jun Ma;
* 04/06/2017: 
** [[media:Meeting_04_06_2017_Jun.pdf|Start-to-end CeC simulation (using smoothed parameters from raw particle distribution, beam not matched to FEL, see beam variation in wiggler from below plot)]],   by Jun Ma;
** [[media:Meeting_04_06_2017_Jun_1.png|Transverse beam size variation along undulator for the simulation results shown in above slides]],   by Jun Ma;
* 03/16/2017: 
** [[media:Meeting_03_16_2017_Jun.pdf|Start-to-end CeC simulation (using direct parameters from raw particle distribution via beam dynamics simulation, not much lasing observed)]],   by Jun Ma;
* 03/02/2017: 
** [[media:Meeting_03_02_2017_Igor.pdf|Physics Applications in Matlab]],   by Igor Pinayev; 
** [[media:Meeting_03_02_2017_Irina.pdf|Updates on Multipacting Simulations]],   by Irina Petrushina;
* 02/16/2017: 
** [[media:Meeting_02_16_2017_Gang.pdf|Discussion of Jun's result (attempt to explain the 'crossing' in vx-x plot, local 'repulsion' not explained)]],   by Gang Wang;
* 02/02/2017: 
** [[media:Meeting_02_02_2017_Jun.pdf|Study of phase advance in quads]],   by Jun Ma;
** [[media:Meeting_02_02_2017_Igor.pdf|Preliminary CeC schedule]],   by Igor Pinayev;
* 01/19/2017: 
** [[media:Meeting_01_19_2017_Gang.pdf|Discussion of Jun's results (Analytical formula to calculate vx)]],   by Gang Wang;
** [[media:Meeting_01_19_2017_Gang2.pdf|Mathcad spreadsheet to calculate vx and a simple estimate to explain the difference at y=0 and y=0.5sigma]],   by Gang Wang;
* 01/12/2017: 
** [[media:Meeting_01_12_2017_Jun.pdf|Phase advance in quads with space charge (Continued studies about reversed slope)]],   by Jun Ma;
** [[media:Meeting_01_12_2017_Igor.pdf|Optimization of laser spot on cathode]],   by Igor Pinayev;
** [[media:Meeting_01_12_2017_Kentaro.pdf|Tomographic Measurement]],   by Kentaro Mihara;
* 12/22/2016: 
** [[media:Meeting_12_22_2016_Gang.pdf|Closer look at Jun's results (Possible reason about not observing reversed slope for continuous focusing channel)]],   by Gang Wang;
* 12/15/2016: 
** [[media:Meeting_12_15_2016_Jun.pdf|Phase advance in quads (Further simulation studies on the reversed slope)]],   by Jun Ma;
* 12/08/2016: 
** [[media:Meeting_12_08_2016_Jing.pdf|CeC simulation status and forward (summary of the beam dynamic simulation status)]],   by Yichao Jing;
* 12/01/2016: 
** [[media:Meeting_12_01_2016.pdf|Modulator simulations (More 2D plots for continuous focusing, some results for analyzing the reversed slope)]],   by Jun Ma;
** [[media:Meeting_12_01_2016_wang_1.pdf|Mathcad spreadsheet-a possible explanation of the reversed slope in <vx> ]],   by Gang Wang;
* 11/10/2016: 
** [[media:Meeting_11_10_2016.pdf|Modulator simulations with linear focusing(added results for moving ion)]],   by Jun Ma;
** [[media:Meeting_11_10_2016_continued.pdf|Modulator simulations with quadruple focusing(unexplained reverse slope for <vx> modulation)]],   by Jun Ma;
* 10/27/2016: 
** [[media:Meeting_10_27_2016.pdf|Modulator simulations with focusing field (Linear focusing plus space charge compensating field, quadruple focusing)]],   by Jun Ma;
* 09/29/2016: 
** [[media:Meeting_09_29_2016.pdf|Particle initialization and focusing field (benchmarked with MAD-X)]],   by Jun Ma;
* 09/15/2016: 
** [[media:Meeting_09_15_2016.pdf|Modulator simulation (preparation for paper)]],   by Jun Ma;
* 09/01/2016: 
** [[media:Meeting_09_01_2016.pdf|Start-to-end CeC simulation (first meaningful results)]],   by Jun Ma;
* 08/18/2016: 
** [[media:Meeting_08_18_2016.pdf|Start-to-end CeC simulation(saturated due to small number of macro-particles in the slice containing ion)]],   by Jun Ma;
** [[media:Meeting_08_18_2016_Gang.pdf|Import particles/distributions into Genesis]],   by Gang Wang;
* 08/04/2016: 
** [[media:Meeting_08_04_2016_revised.pdf|PIC and Genesis (connecting modulator with FEL, and FEL with kicker)]],   by Jun Ma;
* 07/21/2016: 
** [[media:Meeting_07_21_2016.pdf|Wiggler simulations (Genesis scaling with number of particles, evolution in kicker)]],   by Jun Ma;
* 07/07/2016: 
** [[media:Meeting_07_07_2016.pdf|Wiggler simulations (larger domain but no enhancement in modulation observed)]],   by Jun Ma;
* 06/09/2016: 
** [[media:Meeting_06_09_2016.pdf|Modulator simulations (quads, after fixing a bug causing the 'flat center' in energy modulation) and preliminary dipole (FEL) simulation]],   by Jun Ma;
* 05/26/2016: 
** [[media:Meeting_05_26_2016.pdf|Modulator simulations (soft edge quads with longer edge) and preliminary dipole (FEL) simulation]],   by Jun Ma;
* 04/28/2016: 
** [[media:Meeting_04_28_2016.pdf|Comparison of modulator simulation with theory (soft edge quads)]],   by Jun Ma;
* 04/14/2016: 
** [[media:Meeting_04_14_2016.pdf|Comparison of modulator simulation with theory ]],   by Jun Ma;
* 03/31/2016: 
** [[media:Meeting_03_31_2016.pdf|Modulator simulation in quadruple channel (hard edge quads)]],   by Jun Ma;
* 03/17/2016: 
** [[media:Meeting_03_17_2016.pdf|Modulator and wiggler Simulation ]],   by Jun Ma;
* 03/03/2016: 
** [[media:Meeting_03_03_2016.pdf|Modulator Simulation (open boundary condition and continuous focusing field) ]],   by Jun Ma;
* 02/18/2016: 
** [[media:Meeting_02_18_2016.pdf|Modulator Simulation (open boundary condition) ]],   by Jun Ma;
* 01/21/2016: 
** [[media:Meeting_01_21_2016_1.pdf|Modulator Simulation (open boundary condition) ]],   by Jun Ma;
** [[media:Meeting_01_21_2016_2.pdf|CeC electron linac simulation ]],   by Yuan Hui Wu
* 01/07/2016: 
** [[media:Comparison_GW.pdf|Comparing Modulator Simulation With Theory ]],   by Gang Wang;
* 12/10/2015: 
** [[media:Meeting_12_10_2015_1.pdf|Modulator and Wiggler Simulation]],   by Jun Ma;
** [[media:Meeting_12_10_2015_2.pdf|Analytical Solution of Fokker-Planck Equation]], by Gang Wang
*10/8/2015:
** [[media:Meeting_10_08_2015_1.pdf|Beam Simulations with ASTRA]], by Igor Pinayev