Documentation database

	Notes	Reports	Conference papers	Publications	Thesis
WP1	2	4	0	0	0
WP2	0	9	0	0	0
WP3	0	4	0	0	0
WP4	0	4	0	0	0
WP5	0	3	0	0	0
WP6	3	4	4	1	0
WP7	0	4	0	0	0
WP8	2	2	3	0	0
WP9	0	2	0	0	0

 

All the papers should acknowledge the EU funding in the following way:
The research leading to these results has received funding from the European Commission under the
FP7-INFRASTRUCTURES-2010-1/INFRA-2010-2.2.11 project TIARA (CNI-PP). Grant agreement no 261905.

PUBLICATION  Ultra low vertical emittance at SLS through systematic and random optimization  / M. Aiba, M. Böge, N. Milas and A. Streun (PSI) WP6 /   A new vertical emittance record of 0.9+-0.4 pm rad was established in the storage ring of the Swiss Light Source (SLS) at 2.4 GeV by the application of a sequence of methods: Magnet girders were remotely vertically realigned in order to suppress the dipolar fields that produce the spurious dispersion in the vertical plane. A systematic optimization was then performed by measuring and correcting the betatron coupling and the vertical dispersion by means of 36 skew quadrupole correctors. The correction is performed until a limit is reached from the orbit response matrix (ORM) measurement errors and residual model deficiencies. At this point, the method of random optimization (RO), a multi-variable optimization procedure, was invoked. In the present experiment, the vertical beam size is the target function while the skew quadrupole currents act as the correction variables. [...] TIARA-PUB-WP6-2012-001  / 2012-10-16