Photon reflectivity distributions from the LHC beam screen and their implications on the arc beam vacuum system
作者: N. MahneV. BaglinI.R. CollinsA. GigliaL. PasqualiM. PedioS. NannaroneR. Cimino
作者单位: 1TASC-INFM, SS 14, Km 163.5, Basovizza, Trieste, Italy
2CERN CH-1211, Geneva 23, Switzerland
3Università di Modena e Reggio E.-41100, Modena, Italy
4LNF-INFN 00044, Frascati, Italy
刊名: Applied Surface Science, 2004, Vol.235 (1), pp.221-226
来源数据库: Elsevier Journal
DOI: 10.1016/j.apsusc.2004.05.271
关键词: Beam dynamicsCollective effect and instabilitiesAbsorption and reflection spectra: visible and ultraviolet
原始语种摘要: Abstract(#br)In particle accelerators with intense positively charged bunched beams, an electron cloud may induce beam instabilities and the related beam induced electron multipacting (BIEM) can result in an undesired pressure rise. In a cryogenic machine such as the large hadron collider (LHC), the BIEM will introduce additional heat load. When present, synchrotron radiation (SR) may generate a significant number of photoelectrons, that may play a role in determining the onset and the detailed properties of the electron cloud related instability. Since electrons are constrained to move along field lines, those created on the accelerator equator in a strong vertical (dipole) field cannot participate in the e-cloud build-up. Therefore, for the LHC there has been a continuous effort to find...
全文获取路径: Elsevier  (合作)
影响因子:2.112 (2012)

  • their 他们的
  • reflectivity 反射比
  • undesired 不希望有的
  • solution 溶液
  • vacuum 真空
  • illuminated 被照明的加了灯饰的
  • vertical 垂线
  • equator 赤道
  • positively 断然
  • continuous 连续的