As a complementary method for measuring the beam size for high-intensity beams at 6.5 TeV flat-top energy, beam separation scans were done regularly at the CERN Large Hadron Collider (LHC) during 2015 proton physics operation. The luminosities measured by the CMS experiment during the scans were used to derive the convoluted beam size and orbit offset bunch-by-bunch. This contribution will elaborate on the method used to derive plane-by-plane, bunch-by-bunch emittances from the scan data, including uncertainties and corrections. The measurements are then compared to beam size estimations from absolute luminosity, synchrotron light telescopes, and wire scanners. In particular, the evolution of the emittance over the course of several hours i...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
During 2015 proton physics operation, beam size estimates were derived from the luminosities acquire...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
A new type of fast luminosity separation scans ("emittance scans") was introduced at the CERN Large ...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
9siThe measurement of the luminosity recorded by the CMS detector installed at LHC interaction point...
Intensity, transverse emittance and bunch length are key parameters defining the LHC luminosity reac...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
During 2015 proton physics operation, beam size estimates were derived from the luminosities acquire...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
A new type of fast luminosity separation scans ("emittance scans") was introduced at the CERN Large ...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
9siThe measurement of the luminosity recorded by the CMS detector installed at LHC interaction point...
Intensity, transverse emittance and bunch length are key parameters defining the LHC luminosity reac...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...
The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5,...