Agenda Plan, 14-17 December 2009

The meeting will start at 14:00, 14th December and will end at noon, 17th December, 2009.

We would like to have more discussion time than presentations.

Major issues to be discussed are listed below;

Commissioning status - beam and optics tuning

1. Performance of High Beta Optics Beam Tuning
   • Dispersion correction - residual one from DR ?
   • Coupling correction
2. ATF Operation
   • ATF2 commissioning and non-ATF2 studies as well as maintenance
   • more international support for operation ?

Critical review of achievements and shed light on issues to be studied

1. Performance of BPM system ( C- , S-band and stripline BPMs)
   • Stability of calibration constant
   • High resolution without attenuator
   • Orbit reconstruction
   • BBA
2. Performance of 5 wire scanner system
   • emittance
   • effect of coupling, dispersion
3. Performance of Shintake monitor
   • new instrument such as screen monitor, wire scanner, knife edge monitor at IP
   • interference with phase stability
4. Alignment
   • tools to be universal ? - e.g. KEK and SLAC styles
   • long term
     • survey in summers
     • HLS system
   • short term
     • Straightness monitor
     • Monalisa

Milestones in 2009-2010

1. sub-micron beam size
2. ILC scaled &sigma_y=75nm
3. Design &sigma_y=37nm
4. 2nm resolution of IP BPM
5. FONT IP feedback commissioning for nm stability of IP position

Future Plan in 2010 -

1. Generation of ILC like bunch train
   • fast kicker
   • FONT feedback with IPBPM or tilt-monitor
   Pushed beta R&D
   • study at present configuration for Eduardo MARIN LACOMA's (CERN) Doctor degree
   • SC-QD0 and a new QF1 with larger aperture
2. SC-FD
   • stability of magnetic field to be less than 50nm : tolerance at ILC
   • stabilization at nm level by the FONT IP feedback : demonstration of ILC stabilization
   • smaller multipoles : sextupole components of QF1 and QD0, and 12-pole component of QF1 e.g. present magnets have QD0 sext:0.0255 and QF1 sext/12-pole:0.0274/0.036 , where values are % quadrapole field strength at r=1cm and nominal field values for ATF2 design optics QD0=132.2A, QF1=77.5A
   • replace QF1 with the SC-FD instead of QD0 for the issue of "12-pole component of QF1".

The 9th ATF TB/SGC Meeting