The new FBCT in the SPS Luciana Kolbeck EDMS 2234336 2 10/07/2019
Content New location • New FBCT • Measurement calibrations • Other news • EDMS 2234336 3 10/07/2019
New FBCT location Why?: Too much radiation from the new dump • New location: BA3 319 • The old FBCT will stay in BA3 314 • New device names: • Old FBCT: SPS.BCTFR.31450 • • New FBCT: SPS.BCTW.31931 • Aperture issue: due to misalignment, the FBCT is large enough (76mm diameter) EDMS 2234336 4 10/07/2019
The new FBCT EDMS 2234336 5 10/07/2019
The new FBCT Wall-current-transformer (as in the LHC) • Less dependence on beam position and • bunch length Digital acquisition • EDMS 2234336 6 10/07/2019
The new FBCT • The wall-current flows through the 8 screws • Transformers (red) around the screws measure the current Graphic by M. Krupa EDMS 2234336 7 10/07/2019
The new FBCT Graphic by M. Krupa EDMS 2234336 8 10/07/2019
The new FBCT Picture by M. Krupa EDMS 2234336 9 10/07/2019
The new FBCT Digital acquisition (also for transfer-line • FBCTs and old FBCT): • Self-phasing • Parallel acquired gain ranges, automatic switch • Baseline correction EDMS 2234336 10 10/07/2019
New measurement calibrations Different calibrations for different beam types • Zero-suppression modes: uncaptured beam • and accurate intensity EDMS 2234336 11 10/07/2019
New measurement calibrations LHC beam type: • • baseline correction of 25ns buckets Graphic by T. Levens EDMS 2234336 12 10/07/2019
New measurement calibrations Fixed-target beam type: turn-by-turn • baseline correction Graphic by T. Levens EDMS 2234336 13 10/07/2019
New measurement calibrations Last run: automatic detection + PPM setting • for calibration factor After LS2: PPM setting for baseline • correction + calibration factor EDMS 2234336 14 10/07/2019
New measurement calibrations Zero-suppression modes: • • One buffer with zero-suppression for accurate intensity measurement • One buffer without zero-suppression to see uncaptured beam EDMS 2234336 15 10/07/2019
New measurement calibrations possible to see both acquisitions at the same time Total intensity is always using the accurate intensity measurement EDMS 2234336 16 10/07/2019
New measurement calibrations EDMS 2234336 17 10/07/2019
New measurement calibrations FBCT application: • Left menu → calibration EDMS 2234336 18 10/07/2019
Other news Transfer-line FBCTs and the old ring FBCT will get • a new digital acquisition system and a new FESA class The transfer-line FBCT and the old ring FBCT are • based on the same system • We will have a live acquisition (10Hz) of the FBCT • Improved turn-by-turn acquisition • FBCT data will be in the QC EDMS 2234336 19 10/07/2019
FBCT application EDMS 2234336 21 10/07/2019
FBCT application EDMS 2234336 22 10/07/2019
FBCT application EDMS 2234336 23 10/07/2019
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