Technical followup PS survey https indico cern chevent946681

Technical follow-up PS survey https: //indico. cern. ch/event/946681/ Pierre VALENTIN, Tobias DOBERS 2020 -08 -19

Alignment status of the MU’s § Initial measurement for all 100 MU’s COMPLETED § First correction / displacement campaign in vertical and horizontal COMPLETED § After re-calculation of the new offsets the situation is the following: § Vertical component Ø COMPLETED (no further displacements to be done) § Radial component Ø A second displacement campaign to be done Ø 10 units impacted Ø Only one in the SWY: MU 18 planned this week (no opening vacuum needed) 2020 -08 -19 Pierre VALENTIN, Tobias DOBERS | Technical follow-up PS survey 2

Vertical smoothed offset curve after campaign #1 2020 -08 -19 Pierre VALENTIN, Tobias DOBERS | Technical follow-up PS survey 3

Radial smoothed offset curve after campaign #1 2020 -08 -19 Pierre VALENTIN, Tobias DOBERS | Technical follow-up PS survey 4

Alignment status of the SS’s § Initial measurement of the SS’s in the SWY COMPLETED § Alignment campaign in vertical and horizontal ON GOING § W 33: SS 13, SS 21 § W 34: SS 16 and SS 26 § Alignments in the SWY should be finished this week § Major difficulties § SS 16/26 (SMH): Gauge and parameters not available yesterday. . § SS 27: no way to align both components independantly within the standard SURVEY tolerances § SS 19: radial displacement #2 on MU 18 to perform first § SS 14/29: missing the BE-ABP approbation 2020 -08 -19 Pierre VALENTIN, Tobias DOBERS | Technical follow-up PS survey 5

SURVEY needs to complete the SS alignments (SWY) § Waiting for clear alignment tolerances § Needed ASAP § Order by type (bendings, quads, septums, kickers, RF, etc. ) § At beam level § Including roll angle tolerance § BE-ABP instructions/validations 2020 -08 -19 Pierre VALENTIN, Tobias DOBERS | Technical follow-up PS survey 6

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