• D. Schulte, R. Corsini, B. Dalena, J.-P. Delahaye, S. Döbert, G. Geschonke, A. Grudiev, J.B. Jeanneret, E. Jensen, P. Lebrun, Y. Papaphilippou, L. Rinolfi, G. Rumolo, H. Schmickler, F. Stulle, I. Syratchev, R. Tomás, W. Wuensch
  CERN, Geneva
• E. Adli
  University of Oslo, Oslo

The physics ex­per­i­ments at CLIC will re­quire that the ma­chine scans lower than nom­i­nal cen­tre-of-mass en­er­gy. We pre­sent dif­fer­ent op­tions to achieve this and dis­cuss the im­pli­ca­tions for lu­mi­nos­i­ty and the ma­chine de­sign.

• J.-P. Delahaye
  CERN, Geneva

The CLIC study is a site in­de­pen­dent study ex­plor­ing tech­no­log­i­cal de­vel­op­ments to ex­tend lin­ear col­lid­ers into the Mul­ti-TeV col­lid­ing beam en­er­gy range at rea­son­able cost and power con­sump­tion. A con­cep­tu­al de­sign re­port (CDR) of an elec­tron-positron Com­pact LIn­ear Col­lid­er (CLIC) with a 3 TeV cen­ter-of-mass col­li­sion en­er­gy is present­ly being pre­pared in­clud­ing re­sults of 25 years of R&D to ad­dress the fea­si­bil­i­ty of its novel and promis­ing tech­nol­o­gy, es­pe­cial­ly in an am­bi­tious Test Fa­cil­i­ty, CTF3. The R&D is per­formed by a mul­ti-lat­er­al CLIC/CTF3 col­lab­o­ra­tion strong of 37 vol­un­teer in­sti­tutes from 19 coun­tries from which the out­stand­ing work and re­sults are re­port­ed.

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