Simulations of Coherent Synchrotron Radiation on Parallel Hybrid GPU/CPU Platform

Terzić, Balsa; Arumugam, Kamesh; Duffin, Dallan; Godunov, Alexander; Islam, Tunazzina; Ranjan, Desh; Sangam, Sukesh; Zubair, Mohammad

doi:10.18429/JACoW-IPAC2017-THPAB085

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RIS citation export for THPAB085: Simulations of Coherent Synchrotron Radiation on Parallel Hybrid GPU/CPU Platform

TY - CONF
AU - Terzić, B.
AU - Arumugam, A.
AU - Duffin, D.
AU - Godunov, A.L.
AU - Islam, T.
AU - Ranjan, D.
AU - Sangam, S.
AU - Zubair, M.
ED - Schaa, Volker RW
ED - Arduini, Gianluigi
ED - Pranke, Juliana
ED - Seidel, Mike
ED - Lindroos, Mats
TI - Simulations of Coherent Synchrotron Radiation on Parallel Hybrid GPU/CPU Platform
J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017
C1 - Copenhagen, Denmark
T2 - International Particle Accelerator Conference
T3 - 8
LA - english
AB - Coherent synchrotron radiation (CSR) is an effect of self-interaction of an electron bunch as it traverses a curved path. It can cause a significant emittance degradation, as well as fragmentation and microbunching. Numerical simulations of the 2D/3D CSR effects have been extremely challenging due to computational bottlenecks associated with calculating retarded potentials via integrating over the history of the bunch. We present a new high-performance 2D, particle-in-cell code which uses massively parallel multicore GPU/GPU platforms to alleviate computational bottlenecks. The code formulates the CSR problem from first principles by using the retarded scalar and vector potentials to compute the self-interaction fields. The speedup due to the parallel implementation on GPU/CPU platforms exceeds three oders of magnitude, thereby bringing a previously intractable problem within reach. The accuracy of the code is verified against analytic 1D solutions (rigid bunch) and semi-analytic 2D solutions for the chirped bunch. Finally, we use the new code in conjunction with a genetic algorithm to optimize the design of a fiducial chicane.
PB - JACoW
CP - Geneva, Switzerland
SP - 3915
EP - 3917
KW - simulation
KW - GPU
KW - radiation
KW - emittance
KW - synchrotron
DA - 2017/05
PY - 2017
SN - 978-3-95450-182-3
DO - 10.18429/JACoW-IPAC2017-THPAB085
UR - http://jacow.org/ipac2017/papers/thpab085.pdf
ER -