6th WP5 Meeting
September 26th 9:30AM Cern time.
Participation: Strathclyde, KIT, STFC, KYMA, PSI, AU-IAT, ALBA, ANSTO, ST-ELETTRA, ENEA
Discussion about the cost estimate of the CompactLight undulator system, as requested by WP2 and WP7.
R. Geometrante and A. Bernhard wish to ask the requesters to be more specific if considering all cost sources: investment, running, maintenance, repair, refurbishment as well as recycling. R. Geometrante also asks whether the driving guideline should be cost or compactness, not always fully chained (e.g. small gain length could demand for high peak current). T. Schmidt also asks to have specified which undulator technology should be envisaged for the cost estimate: Today or 5 years from now.
T. Schmidt will circulate a data sheet where to fill the different cost sources for each undulator technology.
H.M.C. Cortes asks whether to consider also the costs related to the transport optics. T. Schmidt and F. Nguyen answer that the focus will be given on the undulator system.
Concerning the Soft X-ray case, M. Kokole comments that the requirements to have variable polarization and two colors configurations pose non negligible constraints on the undulator period and on the K strength parameter.
S. Di Mitri points out that very small emittance values are within reach, if the charge does not grow much.
J. Clarke asks to circulate "aggressive" tables for both Hard X-ray and Soft X-Ray configurations, in such a way to meet the extreme performance values expressed for CompactLight. F. Nguyen will update his tables to this aim.
T. Schmidt and R. Geometrante comment on the reach for small undulator gap values with In-Vacuum structures. The benchmark value for the undulator in Today technology is 3 mm.
A.Cross discusses the gyroklystron as the possible most efficient source for the microwave undulator.
T. Schmidt comments on the material to be assumed for evaluating the wakefield effects inside the undulator system, as Z. Nergiz made very good progress on this item.