IBIC2022 - List of Authors (Gudkov, D.)

Paper	Title	Page
WEP12	HL-LHC BPM System Development Status	408
	M. Krupa, I. Degl’Innocenti, D. Gudkov, G. Schneider CERN, Meyrin, Switzerland D.R. Bett JAI, Oxford, United Kingdom
	The demanding instrumentation requirements of the future High Luminosity LHC (HL-LHC) require 44 newly designed Beam Position Monitors (BPM) to be installed around the ATLAS and CMS experiments in 2026-2028. Three BPM types are now in pre-series production, with two more variants under design. Close to the collision point, a set of cryogenic directive coupler BPMs equipped with a brand new acquisition system based on nearly-direct digitization will resolve the position of the two counter-rotating LHC beams occupying a common vacuum chamber. Other new button and stripline BPMs will provide not only the transverse beam position, but also timing signals for the experiments, and diagnostics for the new HL-LHC crab cavities. This contribution summarizes the HL-LHC BPM specifications, gives an overview of the new BPM designs, reports on the pre-series BPM production status and plans for series manufacturing, outlines the foreseen acquisition system architecture, and highlights the first beam measurements carried out with the proof-of-concept electronics for the directive stripline BPMs.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP12
About •	Received ※ 09 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 03 October 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP23	Assessing the Performance of the New Beam Wire Scanners for the CERN LHC Injectors	443
	S. Di Carlo, W. Andreazza, D. Belohrad, J. Emery, J.C. Esteban Felipe, A. Goldblatt, D. Gudkov, A. Guerrero, S. Jackson, G.O. Lacarrere, M. Martin Nieto, A.T. Rinaldi, F. Roncarolo, C. Schillinger, R. Veness CERN, Meyrin, Switzerland
	The ability of reliably measuring the transverse beam profile in its injectors is essential for the operation of the LHC. This report aims to assess the reliability, stability, and reproducibility of the new generation of beam wire scanners developed at CERN in the framework of the LHC Injectors Upgrade (LIU). The study includes data from the over 60000 scans performed in 2021 and 2022, with a special focus on reproducibility, investigation of optimal operational settings to ensure a large dynamic range, and evaluation of absolute accuracy through comparison with other instruments present in the injectors.
	Poster WEP23 [1.590 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP23
About •	Received ※ 06 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 10 December 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

HL-LHC BPM System Development Status

408

M. Krupa, I. Degl’Innocenti, D. Gudkov, G. Schneider
CERN, Meyrin, Switzerland
D.R. Bett
JAI, Oxford, United Kingdom

The demanding instrumentation requirements of the future High Luminosity LHC (HL-LHC) require 44 newly designed Beam Position Monitors (BPM) to be installed around the ATLAS and CMS experiments in 2026-2028. Three BPM types are now in pre-series production, with two more variants under design. Close to the collision point, a set of cryogenic directive coupler BPMs equipped with a brand new acquisition system based on nearly-direct digitization will resolve the position of the two counter-rotating LHC beams occupying a common vacuum chamber. Other new button and stripline BPMs will provide not only the transverse beam position, but also timing signals for the experiments, and diagnostics for the new HL-LHC crab cavities. This contribution summarizes the HL-LHC BPM specifications, gives an overview of the new BPM designs, reports on the pre-series BPM production status and plans for series manufacturing, outlines the foreseen acquisition system architecture, and highlights the first beam measurements carried out with the proof-of-concept electronics for the directive stripline BPMs.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP12

About •

Received ※ 09 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 03 October 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP23

Assessing the Performance of the New Beam Wire Scanners for the CERN LHC Injectors

443

S. Di Carlo, W. Andreazza, D. Belohrad, J. Emery, J.C. Esteban Felipe, A. Goldblatt, D. Gudkov, A. Guerrero, S. Jackson, G.O. Lacarrere, M. Martin Nieto, A.T. Rinaldi, F. Roncarolo, C. Schillinger, R. Veness
CERN, Meyrin, Switzerland

The ability of reliably measuring the transverse beam profile in its injectors is essential for the operation of the LHC. This report aims to assess the reliability, stability, and reproducibility of the new generation of beam wire scanners developed at CERN in the framework of the LHC Injectors Upgrade (LIU). The study includes data from the over 60000 scans performed in 2021 and 2022, with a special focus on reproducibility, investigation of optimal operational settings to ensure a large dynamic range, and evaluation of absolute accuracy through comparison with other instruments present in the injectors.

Poster WEP23 [1.590 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP23

About •

Received ※ 06 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 10 December 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)