Difference: FJPPLAccelerateurRD (14 vs. 15)

Revision 152017-09-05 - Main.PhilipBambade

Line: 1 to 1
 
META TOPICPARENT name="FJPPLprojects"
A_RD_01 : Development of an optical cavity system for the advanced photon sources based on Compton backscattering
Line: 62 to 62
 T. Kubo, H. Hayano, S. Kato, H. Monjushiro, T. Saeki, M. Sawabe

References :

Changed:
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<		[1] K. Nii et al., “Vertical Electro-polishing of Nb single-cell cavity using cathode with variable-geometry wings and its results of vertical test”, LINAC 2014, MOPP108.
>
>		[1] K. Nii et al., “Vertical Electro-polishing of Nb single-cell cavity using cathode with variable-geometry wings and its results of vertical test”, LINAC 2014, MOPP108.
[2] C. Antoine et al., "Study of nanometric superconducting multilayers for magnetic field screening applications", Applied Physics Letters, 2013;102(10):102603
[3] T. Kubo, "Multilayer coating for higher accelerating fields in superconducting radio-frequency cavities: a review of theoretical aspects", Superconductor Science and Technology, 30, 023001 (2017)
 
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A_RD_10 : ATF2 studies and preparation for ILC

Summary :

Changed:
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<		As a demonstrator for Future Linear Colliders (FLC) with nanometer (nm) size e+-e- beams, ATF2 (Accelerator Test Facility) has achieved 44nm vertical beam size, very near to its 37nm goal. It is realized under low intensity beam and the studies on beam intensity dependence will continue. Next major step for our French and Japanese Teams is maintaining the beam position stability of 2nm at IP. To achieve this, numerous studies on Beam Position Monitors in a vacuum chamber with internal moving mechanisms were done. Two diamond strip sensor based scanners were installed for horizontal and vertical beam halo studies together with a vertical dedicated collimator. Clear cuts in the halo from upstream apertures were identified. Ground Motion sensors are being used for vibration source identification and for the development of a new Ground Motion feedforward acting on the beam stability. In addition, improvement of the QF1FF Final Focus magnet support has to be done. These studies will be of paramount importance for the preparation of the ILC, in this context the French team was invited to join a new KEK-based study group charged with re-optimizing ILC IP/BDS/DR parameters for a staged ILC project starting with a 250 GeV centre-of-mass energy. This program is the ideal framework for the training of students in the Accelerators Physics field.l
>
>		As a demonstrator for Future Linear Colliders (FLC) with nanometer (nm) size e+-e- beams, ATF2 (Accelerator Test Facility) has achieved 44nm vertical beam size, very near to its 37nm goal. It is realized under low intensity beam and the studies on beam intensity dependence will continue. Next major step for our French and Japanese Teams is maintaining the beam position stability of 2nm at IP. To achieve this, numerous studies on Beam Position Monitors in a vacuum chamber with internal moving mechanisms were done. Two diamond strip sensor based scanners were installed for horizontal and vertical beam halo studies together with a vertical dedicated collimator. Clear cuts in the halo from upstream apertures were identified. Ground Motion sensors are being used for vibration source identification and for the development of a new Ground Motion feedforward acting on the beam stability. In addition, improvement of the QF1FF Final Focus magnet support has to be done. These studies will be of paramount importance for the preparation of the ILC, in this context the French team was invited to join a new KEK-based study group charged with re-optimizing ILC IP/BDS/DR parameters for a staged ILC project starting with a 250 GeV centre-of-mass energy. This program is the ideal framework for the training of students in the Accelerators Physics field.
  French members :
A. Faus-Golfe, P. Bambade, F. Bogard, L. Brunetti, P. Cornebise, A. Jeremie, S. Wallon, R. Yang
Line: 80 to 83
 References :
[1] G.White et al., Experimental Validation of a Novel Compact Focusing Scheme for Future Energy-Frontier Linear Lepton Colliders, Phys. Rev. Lett. 112 (2014) 034802
[2] T. Okugi et al., Linear and second order optics corrections for the KEK Accelerator Test Facility final focus beam line, Physical Review Special Topics - Accelerators and Beams 17, 023501 (2014)
Changed:
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<		[3] E. Marin et al., Design and high order optimization of the Accelerator Test Facility lattices, Physical Review Special Topics - Accelerators and Beams 17, 021002 (2014)
[4] D. Wang et al., Analytical Estimate of ATF Beam Halo Distribution, Chinese Physics C 2014 Vol. 38(12): 127003
>
>		[3] S. Liu et al., Design and high order optimization of the Accelerator Test Facility lattices, Physical Review Special Topics - Accelerators and Beams 17, 021002 (2014)
[4] D. Wang et al., In vacuum diamond sensor scanner for beam halo measurements in the beam line at the KEK Accelerator Test Facility, Nucl.Instrum.Meth. A832 (2016) 231-242
 [5] Y. Renier et al., Trajectory measurements and correlations in the final focus beam line at the KEK Accelerator Test Facility, Physical Review Special Topics - Accelerators and Beams 16, 062803 (2013)
Changed:
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<		[6] Bambade P. et al., Present status and first results of the final focus beam line at the KEK Accelerator Test Facility, Phys. Rev. ST Accel. Beams 13, (2010) 042801
>
>		[6] P. Bambade et al., Present status and first results of the final focus beam line at the KEK Accelerator Test Facility, Phys. Rev. ST Accel. Beams 13, (2010) 042801
 [7] D. Bett et al., GROUND MOTION COMPENSATION USING FEED-FORWARD CONTROL AT ATF2, WEPOR005, 7th International Particle Accelerator Conference (IPAC 2016), Busan, Korea, 8-13 May, 2016
Changed:
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<		[8] Nuria Fuster-Martinez et al., ATF2 Beam Halo Collimation Background and Wakefield Measurements in 2016 Runs, IPAC 2017
[9] Renjun Yang et al., Measurements of Transverse Beam Tails in the Accelerator Test Facility 2 of KEK, IPAC 2017
[10] Renjun Yang et al., Theoretical Study of Beam Tail Formation in the Accelerator Test Facility of KEK, IPAC2017
>
>		[8] N. Fuster-Martinez et al., ATF2 Beam Halo Collimation Background and Wakefield Measurements in 2016 Runs, IPAC 2017
[9] R. Yang et al., Experimental Study of Halo Formation at ATF2, IPAC 2017
[10] R. Yang et al., Numerical Investigation of Beam Halo From Beam Gas Scattering in KEK-ATF, IPAC2017, published in J.Phys.Conf.Ser. 874 (2017) no.1, 012063
 

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