TY - JOUR
T1 - Comparison between measurements, simulations, and theoretical predictions of the extraction kicker transverse dipole instability in the Spallation Neutron Source
AU - Holmes, J. A.
AU - Cousineau, S.
AU - Danilov, V.
AU - Jain, L.
PY - 2011/7/27
Y1 - 2011/7/27
N2 - Occasionally, it is possible to bring together experiment, theory, and simulation in detail. Such an occasion occurred during a high intensity beam physics study in the Spallation Neutron Source (SNS). A transverse dipole instability in the vertical direction has been observed in the accumulator ring for a coasting beam that was stored for 10000 turns. This instability was observed at a beam intensity of about 12 μC and was characterized by a frequency spectrum peaking at about 6 MHz. The probable cause of the instability is the impedance of the ring extraction kickers. We carry out here a detailed benchmark of the observed instability, uniting an analysis of the experimental data, a precise ORBIT code tracking simulation, and a theoretical estimate of the observed beam instability.
AB - Occasionally, it is possible to bring together experiment, theory, and simulation in detail. Such an occasion occurred during a high intensity beam physics study in the Spallation Neutron Source (SNS). A transverse dipole instability in the vertical direction has been observed in the accumulator ring for a coasting beam that was stored for 10000 turns. This instability was observed at a beam intensity of about 12 μC and was characterized by a frequency spectrum peaking at about 6 MHz. The probable cause of the instability is the impedance of the ring extraction kickers. We carry out here a detailed benchmark of the observed instability, uniting an analysis of the experimental data, a precise ORBIT code tracking simulation, and a theoretical estimate of the observed beam instability.
UR - http://www.scopus.com/inward/record.url?scp=79961076435&partnerID=8YFLogxK
U2 - 10.1103/PhysRevSTAB.14.074401
DO - 10.1103/PhysRevSTAB.14.074401
M3 - Article
AN - SCOPUS:79961076435
SN - 1098-4402
VL - 14
JO - Physical Review Special Topics - Accelerators and Beams
JF - Physical Review Special Topics - Accelerators and Beams
IS - 7
M1 - 074401
ER -