002846753 001__ 2846753
002846753 005__ 20241231040046.0
002846753 0248_ $$aoai:cds.cern.ch:2846753$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002846753 0247_ $$2DOI$$9Elsevier B.V.$$a10.1016/j.nima.2023.168770$$qpublication
002846753 037__ $$9arXiv$$aarXiv:2301.02340$$cphysics.acc-ph
002846753 035__ $$9arXiv$$aoai:arXiv.org:2301.02340
002846753 035__ $$9Inspire$$aoai:inspirehep.net:2621262$$d2024-12-30T20:25:02Z$$h2024-12-31T03:00:03Z$$mmarcxml$$ttrue$$uhttps://inspirehep.net/api/oai2d
002846753 035__ $$9Inspire$$a2621262
002846753 041__ $$aeng
002846753 100__ $$aEricson, [email protected]$$uCERN$$uSaskatchewan U.$$vCERN, European Organization for Nuclear Research, 1 Espl. des Particules, Meyrin, 1221, Switzerland$$vDepartment of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, S7N 5E2, Canada
002846753 245__ $$9Elsevier B.V.$$aWakefield damping in a distributed coupling linear accelerator
002846753 246__ $$9arXiv$$aWakefield damping in a distributed coupling LINAC
002846753 269__ $$c2023-01-05
002846753 260__ $$c2023-10-11
002846753 300__ $$a7 p
002846753 520__ $$9Elsevier B.V.$$aThe number of cells in a <math altimg="si3.svg" display="inline" id="d1e680"><mi>π</mi></math>-mode standing wave (SW) accelerating structure for the Compact Linear Collider (CLIC) project is limited by mode overlap with nearby modes. The distributed coupling scheme avoids mode overlap by treating each cell as independent. Designs of cells suitable for distributed coupling with strong wakefield suppression by waveguide damping have not previously been studied. In this paper we develop a SW cell to be used in a distributed coupling structure that can satisfy the CLIC transverse wake potential limit. From the middle cell of the CLIC-G* traveling wave (TW) structure, a SW cell is designed and then adapted to perform as a cell in a distributed coupling structure. Its wake potentials in an ideal case of open boundaries are reduced to satisfy the wake potential threshold. An electric boundary is added to the model to simulate total reflection at the distribution network. A horizontal coupler cell that connects to the distribution network such that the reflected wakefields remain similar to the open boundary case is simulated. A triplet module which takes advantage of cell-to-cell coupling to reduce reflected wake potential is presented.
002846753 520__ $$9arXiv$$aThe number of cells in a $\pi$-mode standing wave (SW) accelerating structure for the Compact linear Collider (CLIC) project is limited by mode overlap with nearby modes. The distributed coupling scheme avoids mode overlap by treating each cell as independent. Designs of cells suitable for distributed coupling with strong wakefield damping have not previously been studied. In this paper we develop a SW cell to be used in a distributed coupling structure that can satisfy the CLIC transverse wakepotential limit. From the middle cell of the CLIC-G* travelling wave (TW) structure, a SW cell is designed. The cell is adapted to be suitable for distributed coupling. Its wakepotentials in an ideal case of open boundaries are reduced to satisfy the wakepotential threshold. An electric boundary is added to the model to simulate total reflection at the distribution network. A horizontal coupler cell that connects to the distribution network such that the reflected wakefields remain similar to the open boundary case is simulated. A triplet module which takes advantage of cell-to-cell coupling to reduce reflected wakepotential is presented.
002846753 540__ $$3preprint$$aCC BY-SA 4.0$$uhttp://creativecommons.org/licenses/by-sa/4.0/
002846753 540__ $$3publication$$aCC-BY-4.0$$fCERN-RP: Elsevier$$uhttps://creativecommons.org/licenses/by/4.0/
002846753 542__ $$3publication$$dThe Author(s)$$g2023
002846753 595_D $$aL$$d2023-01-12$$sabs
002846753 595_D $$aL$$d2023-01-15$$sprinted
002846753 65017 $$2arXiv$$aphysics.acc-ph
002846753 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
002846753 690C_ $$aCERN
002846753 690C_ $$aARTICLE
002846753 700__ $$aGrudiev, Alexej$$uCERN$$vCERN, European Organization for Nuclear Research, 1 Espl. des Particules, Meyrin, 1221, Switzerland
002846753 700__ $$aBertwistle, Drew$$uSaskatchewan U.$$uSaskatchewan U., CLS$$vDepartment of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, S7N 5E2, Canada$$vCanadian Light Source, 44 Innovation Blvd, Saskatoon, S7N 2V3, Canada
002846753 700__ $$aBoland, Mark J.$$uSaskatchewan U.$$uSaskatchewan U., CLS$$vDepartment of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, S7N 5E2, Canada$$vCanadian Light Source, 44 Innovation Blvd, Saskatoon, S7N 2V3, Canada
002846753 773__ $$c168770$$mpublication$$pNucl. Instrum. Methods Phys. Res., A$$v1057$$y2023
002846753 8564_ $$82419018$$s45128$$uhttp://cds.cern.ch/record/2846753/files/opt3LongSlot2VaryIWWy.png$$y00002 Transverse wakepotential envelopes of long slot cell with various HOM aperture widths, iw (top) and various HOM waveguide widths, w (bottom).
002846753 8564_ $$82419019$$s41273$$uhttp://cds.cern.ch/record/2846753/files/opt3LongSlot2VaryWWy.png$$y00003 Transverse wakepotential envelopes of long slot cell with various HOM aperture widths, iw (top) and various HOM waveguide widths, w (bottom).
002846753 8564_ $$82419020$$s20190$$uhttp://cds.cern.ch/record/2846753/files/longSlot2Geometry.png$$y00001 Long slot cell geometry with half symmetry. The cell is matched by adjusting the cell outer radius and the length of the HOM waveguide between the cell and the coupler waveguide.
002846753 8564_ $$82419021$$s36141$$uhttp://cds.cern.ch/record/2846753/files/horizontalCouplerHalfHeight.png$$y00009 Horizontal coupler cell geometry.
002846753 8564_ $$82419022$$s25369$$uhttp://cds.cern.ch/record/2846753/files/Opt3longSlot2ShortCircuitWyMagOffset150.png$$y00007 Reflected transverse wakepotential envelopes of long slot cell with w = \SI{10.7}{\milli\meter} and offset = \SI{150}{\milli\meter}.
002846753 8564_ $$82419023$$s39295$$uhttp://cds.cern.ch/record/2846753/files/horizontalCouplerShortCircuitWyMagLong.png$$y00010 Reflected transverse wakepotential of horizontal coupler cell for various offsets.
002846753 8564_ $$82419024$$s39599$$uhttp://cds.cern.ch/record/2846753/files/compareTripletDoubletSingletShortCircuitWakes.png$$y00012 Reflected transverse wakepotentials of structures composed of singlets (long slot cell), doublet (one long slot and one four HOM waveguide cells) and triplet (one long slot and two four HOM waveguide cells).
002846753 8564_ $$82419025$$s29026$$uhttp://cds.cern.ch/record/2846753/files/Offset100Wy2mInterpolateSpectrogram.png$$y00008 Evolution of the mode content of the reflected wakepotential with offset = \SI{100}{\milli\meter}.
002846753 8564_ $$82419026$$s31050$$uhttp://cds.cern.ch/record/2846753/files/triplet.png$$y00011 Triplet module based on the long slot cell with half symmetry.
002846753 8564_ $$82419027$$s17332$$uhttp://cds.cern.ch/record/2846753/files/longSlotWakeStructure.png$$y00006 Model simulated to obtain wakepotential of reflected wakefields of the long slot cell using half symmetry. The HOM waveguide ports (red) are connected to an open boundary. The coupler waveguides are slightly shorter than the HOM waveguides and experience an electric boundary. The model was parameterized to maintain these boundary conditions as the coupler waveguide length was increased.
002846753 8564_ $$82419028$$s293946$$uhttp://cds.cern.ch/record/2846753/files/2301.02340.pdf$$yFulltext
002846753 8564_ $$82419029$$s27748$$uhttp://cds.cern.ch/record/2846753/files/varyWWxWyTuned.png$$y00004 Transverse wakepotentials (top) and impedances (bottom) of long slot cell w = \SI{10.7}{\milli\meter} (bottom).
002846753 8564_ $$82419030$$s11313$$uhttp://cds.cern.ch/record/2846753/files/varyWZxZyTuned.png$$y00005 Transverse wakepotentials (top) and impedances (bottom) of long slot cell w = \SI{10.7}{\milli\meter} (bottom).
002846753 8564_ $$82419031$$s27461$$uhttp://cds.cern.ch/record/2846753/files/TWcell.png$$y00000 Accelerating cell from the CLIC-G* TW structure for CLIC with quarter symmetry.
002846753 8564_ $$82487375$$s1536913$$uhttp://cds.cern.ch/record/2846753/files/Publication.pdf$$yFulltext
002846753 960__ $$a13
002846753 980__ $$aARTICLE