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Wakefield Simulation of CLIC PETS Structure Using Parallel 3D Finite Element Time-Domain Solver T3P
/ Candel, A (SLAC) ; Kabel, A (SLAC) ; Lee, L (SLAC) ; Li, Z (SLAC) ; Ng, C (SLAC) ; Schussman, G (SLAC) ; Ko, K (SLAC) ; Syratchev, I (CERN)
In recent years, SLAC's Advanced Computations Department (ACD) has developed the parallel 3D Finite Element electromagnetic time-domain code T3P. Higher-order Finite Element methods on conformal unstructured meshes and massively parallel processing allow unprecedented simulation accuracy for wakefield computations and simulations of transient effects in realistic accelerator structures. [...]
SLAC-PUB-13670.-
2010
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.FR5PFP068
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2.
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800MHz Crab Cavity Conceptual Design For the LHC Upgrade
/ Xiao, L (SLAC) ; Li, Z (SLAC) ; Ng, C (SLAC) ; Seryi, A (SLAC)
In this paper, we present a 800MHz crab cavity conceptual design for LHC upgrade, including the cell shape optimization, and LOM, SOM, HOM and input coupler design. The compact coax-to-coax coupler scheme is proposed to couple to the LOM and SOM modes which can provide strong coupling to the LOM and SOM modes. [...]
SLAC-PUB-13648.-
2010
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE5PFP048
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3.
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Traveling Wave RF Systems for Helical Cooling Channels
/ Yonehara, K (SLAC) ; Lunin, A (Fermilab) ; Moretti, A (Fermilab) ; Popovic, M (Fermilab) ; Romanov, G (Fermilab) ; Neubauer, M (Muons Inc., Batavia) ; Johnson, R P (Muons Inc., Batavia) ; Thorndahl, L (CERN)
The great advantage of the helical ionization cooling channel (HCC) is its compact structure that enables the fast cooling of muon beam 6-dimensional phase space. This compact aspect requires a high average RF gradient, with few places that do not have cavities. [...]
FERMILAB-CONF-09-204-AD-APC.-
2010
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU5PFP021
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4.
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LHC beam-beam compensation studies at RHIC
/ Fischer, W (Brookhaven) ; Luo, Y (Brookhaven) ; Abreu, N (Brookhaven) ; DeMaria, R (Brookhaven) ; Calaga (Brookhaven) ; Montag, C (Brookhaven) ; Robert-Demolaize, G (Brookhaven) ; Kim, H J (Fermilab) ; Sen, T (Fermilab)
Long-range and head-on beam-beam effects are expected to limit the LHC performance with design parameters. To mitigate long-range effects current carrying wires parallel to the beam were proposed. [...]
FERMILAB-CONF-09-722-APC.-
2010
Fulltext: HTML; Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE3PBI03
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5.
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Application of Non-Linear Time-Domain RF Simulations to Longitudinal Emittance Studies for the LHC
/ Mastorides, T (SLAC) ; Rivetta, C (SLAC) ; Fox, J (SLAC) ; Winkle, D (SLAC)
A non-linear time-domain simulation has been developed that can determine technical limitations, effects of non-linearities and imperfections, and impact of additive noise on the interaction of the beam with the Impedance Control Radio Frequency (RF) systems [1]. We present a formalism for the extraction of parameters from the time-domain simulation to determine the sensitivity of the beam longitudinal emittance and dilution on the RF system characteristics. [...]
SLAC-PUB-13631.-
2010
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE5PFP095
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6.
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7.
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Status of the EP Simulations and Facilities for the SPL
/ Calatroni, S (CERN) ; Ferreira, L M A (CERN) ; Leitao Macatrao, M (CERN) ; Skala, A S (CERN) ; Sosin, M (CERN) ; Withofs, Y L (CERN) ; De Waele, R (KHLim, Diepenbeek)
CERN is assembling a new vertical electropolishing facility in order to process several niobium cavities of beta 1 and beta 0.65 in the context of the HP-SPL R&D; programme. Electrochemical simulations are being used in order to define the optimal cathode geometry to process the cavities in a vertical position. [...]
2010
Published version from LINAC10: PDF;
In : 25th Linear Accelerator Conference, Tsukuba, Japan, 12 - 17 Sep 2010, pp.THP032
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8.
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9.
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An Equivalent Circuit for Post Coupler Stabilization in a Drift Tube Linac
/ Grespan, F (INFN, Legnaro) ; De Michele, G (CERN) ; Ramberger, S (CERN) ; Vretenar, M (CERN)
Post Couplers (PC's) are devices used in order to reduce the effect of perturbations on the operating mode of a DTL, using the resonant coupling stabilization method. In this paper an equivalent circuit for a DTL equipped with PC's is presented, together with a 3D simulation analysis, which can explain the post coupler stabilization principle and define a new tuning strategy for DTL cavities. [...]
2010
Published version from LINAC10: PDF;
In : 25th Linear Accelerator Conference, Tsukuba, Japan, 12 - 17 Sep 2010, pp.TUP072
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10.
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CTF3 Probe Beam LINAC Commissioning and Operations
/ Farabolini, W (Saclay) ; Bogard, D (Saclay) ; Curtoni, A (Saclay) ; Girardot, P (Saclay) ; Peauger, F (Saclay) ; Simon, C S (Saclay) ; Chevallay, E (CERN) ; Divall Csatari, M (CERN) ; Lebas, N (CERN) ; Petrarca, M (CERN) et al.
The probe beam LINAC, CALIFES, of the CLIC Test Facility (CTF3) has been developed by CEA Saclay, LAL Orsay and CERN to deliver trains of short bunches (0.75 ps) spaced by 0.666 ps at an energy around 170 MeV with a charge of 0.6 nC to the TBTS (Two-beam Test Stand) intended to test the high gradient CLIC accelerating structures. Based on 3 former LIL accelerating structures and on a newly developed RF photo-injector, the whole accelerator is powered with a single 3 GHz klystron delivering pulses of 45 MW through a RF pulse compression cavity and a network of waveguides, splitters, phase-shifters and an attenuator. [...]
2010
Published version from LINAC10: PDF;
In : 25th Linear Accelerator Conference, Tsukuba, Japan, 12 - 17 Sep 2010, pp.MOP001
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