Difference between revisions of "CeC Simulation Meeting"

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==Meeting Agenda==
 
==Meeting Agenda==
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* 01/19/2018:
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** [[media:Meeting_1_19_2018_Gang.pdf|Genesis simulation of FEL amplifier with undulators consisting of 3 subsections]],  by Gang Wang;
 +
* 10/27/2017:
 +
** [[media:Meeting_10_27_2017_Jun.pdf|Kicker simulations (Cooling kick is traced for three ions with reference energy and 0.03% off. The ions with energy errors are aligned with wave-packet according to R56. The phase slips inside kicker are still large. The kick to the on-energy ion is significant.)]],  by Jun Ma;
 +
* 10/20/2017:
 +
** [[media:Meeting_10_20_2017_Jun_1.pdf|Kicker simulations (Peak current is increased to 25 A and gain at ion is 60. Cooling kick is traced for three ions with reference energy and 0.1% off. The ions with 0.1% energy errors are arbitrarily put into the wave-packet, not according to R56)]],  by Jun Ma;
 +
** [[media:Meeting_10_20_2017_Jun_2.pdf|Dipole simulations]],  by Jun Ma;
 +
* 09/29/2017:
 +
** [[media:Meeting_09_29_2017_Jun.pdf|Kicker simulations (The problem with growing emittance is resolved. The peak current is also reduced to 23 A (gain is 40 at ion). Kick to ion is calculated. Substantial phase slip of ion w.r.t. wave-packets inside kicker is found.)]],  by Jun Ma;
 +
** [[media:Meeting_09_29_2017_Jun_oc.pdf|Orbit control tool]],  by Jun Ma;
 +
* 09/14/2017:
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** [[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:
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** [[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:
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** [[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:
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** [[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:
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** [[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:
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** [[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:
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** [[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:  
 
* 04/28/2016:  
 
** [[media:Meeting_04_28_2016.pdf|Comparison of modulator simulation with theory (soft edge quads)]],  by Jun Ma;
 
** [[media:Meeting_04_28_2016.pdf|Comparison of modulator simulation with theory (soft edge quads)]],  by Jun Ma;

Latest revision as of 20:56, 16 February 2018

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

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