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Wake-field Monitor Development

Draft proposal for a task within RF work-package of EuCARD-II. Wake-field Monitor Development. Partners: CERN, PSI + others ?. Linear colliders and X-ray Free Electron Lasers require good control of wake-fields. Long range wakes suppressed by HOM damping and detuning (CLIC).

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Wake-field Monitor Development

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  1. Draft proposal for a task within RF work-package of EuCARD-II Wake-field Monitor Development Partners: CERN, PSI + others ? Linear colliders and X-ray Free Electron Lasers require good control of wake-fields. Long range wakes suppressed by HOM damping and detuning (CLIC). Short range wakes driven by beam to structure alignment. Alignment can be determined by coupling to the wakes. → Wake Field Monitor. 1. CERN developing prototype X-band structures for wake-field experiments on FACET 2. PSI/ST/CERN developing X-band structure for longitudinal beam dynamics for SwissFEL and Trieste FEL. 3. Wake-field monitor under design at CEA.

  2. WP tasks • Design and fabricate multi-purpose RF Front Ends for WFM. • Should be easily adaptable to different frequencies; 15 GHz, 18 GHz, 24 GHz • Build hard-ware for CTF3 and SwissFEL injector. • Design and fabricate alternative WFM(s) for other structures • (collaboration with CERN). • 3. Test and commission the different RFFE and pick-ups with beam at CTF3 and • SwissFEL injector. Resources: Hardware: 6 RFFE ~ 120 kE; WFM ~ 80 kE. Manpower (PSI): Scientist/engineer 6 months, post-doc 2 years, technician ~ 2 years. + CERN manpower (?) Participating laboratories: CERN, PSI Infra-structures involved: CTF3, SwissFEL Injector

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