Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Tückmantel, Joachim"'
Higher Order Modes (HOMs) can severely limit the operation of superconducting cavities in a linac with high beam current, high duty factor and complex pulse structure. The full HOM spectrum has to be analyzed in order to identify potentially dangerou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d819f18e6a5b6604a810e47c3fbe9e8c
http://cds.cern.ch/record/1287904
http://cds.cern.ch/record/1287904
Autor:
Zimmermann, F, Bordry, F, Braun, H, Brüning, Oliver Sim, Burkhardt, H, Eide, A, de Roeck, A, Garoby, R, Holzer, B, Jowett, J, Linnecar, T, Mess, K, Osborne, J, Rinolfi, L, Schulte, D, Tomás, R, Tückmantel, Joachim, Vivoli, A, Omori, T, Urakawa, J, Willeke, F, Chattopadhyay, S, Dainton, J, Aksakal, H, Nigde, U, Sultansoy, S, Klein, M
Sub-atomic physics at the energy frontier probes the structure of the fundamental quanta of the Universe. The Large Hadron Collider (LHC) at CERN opens for the first time the ‘terascale’ (TeV energy scale) to experimental scrutiny, exposing the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::e9707f06c440e56b43e89095393e6375
http://cds.cern.ch/record/1208440
http://cds.cern.ch/record/1208440
Autor:
Tückmantel, Joachim
Circular machines are plagued by Coupled Bunch Instabilities, driven by impedance peaks, irrespectively of their frequency relation to machine lines; hence all cavity Higher Order Modes are possible drivers. This is the fundamental reason that all su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::7276949876616070831f33e688e025c2
http://cds.cern.ch/record/1182105
http://cds.cern.ch/record/1182105
In this paper is analysed the influence of Higher Order Modes (HOM) on the operation of the superconducting linac section of the SPL, the Superconducting Proton Linac being designed at CERN. For this purpose, the characteristics of the HOMs in the 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::a100c08f091dd50c502a8ff7c830b46e
http://cds.cern.ch/record/1212996
http://cds.cern.ch/record/1212996
Autor:
Butterworth, A C, Angoletta, M E, Arnaudon, L, Baudrenghien, P, Bohl, T, Brunner, O, Ciapala, Edmond, Dubouchet, F, Höfle, Wolfgang, Linnecar, T P R, Maesen, P, Molendijk, J C, Shaposhnikova, E N, Tückmantel, Joachim, Valuch, D, Wehrle, U, Weierud, F
Hardware commissioning of the LHC RF system was successfully completed in time for first beams in LHC in September 2008. All cavities ware conditioned to nominal field, power systems tested and all Low level synchronization systems, cavity controller
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::e5f01f0fe9918bfa34f27a495d9905f4
http://cds.cern.ch/record/1212921
http://cds.cern.ch/record/1212921
Autor:
Shaposhnikova, E, Bohl, T, Damerau, H, Hanke, K, Linnecar, T, Mikulec, B, Tan, J, Tückmantel, Joachim
First reference measurements of the longitudinal impedance were made with beam in the SPS machine in 1999 to quantify the results of the impedance reduction programme, completed in 2001. The 2001 data showed that the low-frequency inductive impedance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::438a489b8a27446e56044d76938f3b2d
http://cds.cern.ch/record/1211578
http://cds.cern.ch/record/1211578
This Note describes some of the studies in 2008 concerning the longitudinal plane of the LHC beam in the SPS. These studies were carried out for different bunch spacing and different beam intensities, aiming to verify the ability to deliver to the LH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::94cc91e695dec902b2cab57d57b694bb
http://cds.cern.ch/record/1168490
http://cds.cern.ch/record/1168490
Autor:
Ben-Zvi, I, Calaga, R, Assmann, R, Brüning, Oliver Sim, Brunner, O, Ciapala, Edmond, Dorda, U, Garoby, R, Koutchouk, Jean-Pierre, Linnecar, T, Tomás, R, Tückmantel, Joachim, Sun, Y, Zimmermann, F, Peterson, T, Solyak, N, Yakovlev, V, Rimmer,B, Wang, H, Hosoyama, K, Kota, N, Morita, A, Morita, Y, Oide, K, Seryi, A, Li, Z, Xiao, L, Burt, G, McIntosh, P A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::a094b30a0b41bcaafda99c49ff98a5ea
http://cds.cern.ch/record/1201063
http://cds.cern.ch/record/1201063
Autor:
Linnecar, T, Angoletta, M E, Arnaudon, L, Baudrenghien, P, Bohl, T, Brunner, O, Butterworth, A, Ciapala, Edmond, Dubouchet, F, Ferreira-Bento, J, Glenat, D, Hagmann, G, Höfle, Wolfgang, Julie, C, Killing, F, Kotzian, G, Landre, D, Louwerse, R, Maesen, P, Martinez-Yanez, P, Molendijk, J, Montesinos, E, Nicou, C, Noirjean, J, Papotti, G, Pashnin, A, Pechaud, G, Pradier, J, Rossi, V, Sanchez-Quesada, J, Schokker, M, Shaposhnikova, E, Sorokoletev, R, Stellfeld, D, Tückmantel, Joachim, Valuch, D, Wehrle, U, Weierud, F
Hardware commissioning of the LHC RF Systems, the ACS Superconducting RF systems, ADT Transverse Dampers and APWL Wideband Longitudinal Monitors, started in late 2007 and was completed in time for the first LHC beams in 2008. The RF inter-machine syn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::ad03a29480fa938e818b891339b7f9b8
http://cds.cern.ch/record/1176380
http://cds.cern.ch/record/1176380
Preventive longitudinal emittance blow-up, in addition to a fourth harmonic Landau damping RF system, is required to keep the LHC beam in the SPS stable up to extraction. The beam is blown-up in a controlled way during the acceleration ramp by using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od________65::80ab98a05ff5aeeb3cdaaa956fdb4069
http://cds.cern.ch/record/1123692
http://cds.cern.ch/record/1123692