COOL2023 - List of Authors (Ponce, L.)

Paper	Title	Page
MOPPM1R3	Specifications and Status of the New Electron Cooler for the CERN Antiproton Decelerator (AD)	5
	A. Rossi, C. Accettura, W. Andreazza, A. Bollazzi, J. Cenede, N.S. Chritin, Y.C. Coutron, J.A. Ferreira Somoza, A. Frassier, D. Gamba, L.V. Jørgensen, G. Khatri, C. Machado, O. Marqversen, A.I. Pikin, L. Ponce, M. Sameed, C.C. Sequeiro, A. Sinturel, Y. Thurel, T. Todorcevic, G. Tranquille, L. von Freeden CERN, Geneva, Switzerland
	A new electron cooler for the Antiproton Decelerator (AD) is being designed at CERN, and will replace the current device (in operation for more than 40 years), during the next Long Shutdown (2026-2028). The functional specifications [ref. to Davide’s IPAC23], recalled in this paper, favour high reliability, with improved performance in terms of time of cooling, obtained mainly with better field quality and possibly higher electron beam current. The status of the new electron cooler design is presented, showing an evolution that aims at easing integration, installation and maintenance.
	Slides MOPPM1R3 [10.544 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-COOL2023-MOPPM1R3
About •	Received ※ 24 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 20 November 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPAM1R3	Status of E-Cooling Characterisation at 100 keV in ELENA	40
	D. Gamba, F. Asvesta, P.M. Kruyt, L. Ponce, G. Russo CERN, Meyrin, Switzerland
	The Extra Low ENergy Antiproton ring (ELENA) ring at CERN was commissioned in 2018 and is in regular production operation from 2021. ELENA uses e-cooling for cooling pbar beams on two plateaus at 653 keV and 100 keV kinetic energy. The first cooling is necessary to allow for efficient deceleration of the 5.3 MeV pbar beam coming from the Antiproton Decelerator (AD), while the second cooling is used to define the quality of the bunches before extraction. The experience accumulated so far shows that cooling at 653 keV is sufficient to ensure good deceleration efficiency, while cooling at 100 keV might not be sufficient to provide the design transverse beam emittances at extraction. In this paper we document the present ELENA e-cooling performance at 100 keV, the typical optimisation procedure used during setup, and we investigate possible limitations of the present system.
	Slides THPAM1R3 [9.034 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPAM1R3
About •	Received ※ 25 October 2023 — Revised ※ 21 November 2023 — Accepted ※ 21 November 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Specifications and Status of the New Electron Cooler for the CERN Antiproton Decelerator (AD)

5

A. Rossi, C. Accettura, W. Andreazza, A. Bollazzi, J. Cenede, N.S. Chritin, Y.C. Coutron, J.A. Ferreira Somoza, A. Frassier, D. Gamba, L.V. Jørgensen, G. Khatri, C. Machado, O. Marqversen, A.I. Pikin, L. Ponce, M. Sameed, C.C. Sequeiro, A. Sinturel, Y. Thurel, T. Todorcevic, G. Tranquille, L. von Freeden
CERN, Geneva, Switzerland

A new electron cooler for the Antiproton Decelerator (AD) is being designed at CERN, and will replace the current device (in operation for more than 40 years), during the next Long Shutdown (2026-2028). The functional specifications [ref. to Davide’s IPAC23], recalled in this paper, favour high reliability, with improved performance in terms of time of cooling, obtained mainly with better field quality and possibly higher electron beam current. The status of the new electron cooler design is presented, showing an evolution that aims at easing integration, installation and maintenance.

Slides MOPPM1R3 [10.544 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-COOL2023-MOPPM1R3

About •

Received ※ 24 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 20 November 2023 — Issued ※ 02 December 2023

Cite •

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

THPAM1R3

Status of E-Cooling Characterisation at 100 keV in ELENA

40

D. Gamba, F. Asvesta, P.M. Kruyt, L. Ponce, G. Russo
CERN, Meyrin, Switzerland

The Extra Low ENergy Antiproton ring (ELENA) ring at CERN was commissioned in 2018 and is in regular production operation from 2021. ELENA uses e-cooling for cooling pbar beams on two plateaus at 653 keV and 100 keV kinetic energy. The first cooling is necessary to allow for efficient deceleration of the 5.3 MeV pbar beam coming from the Antiproton Decelerator (AD), while the second cooling is used to define the quality of the bunches before extraction. The experience accumulated so far shows that cooling at 653 keV is sufficient to ensure good deceleration efficiency, while cooling at 100 keV might not be sufficient to provide the design transverse beam emittances at extraction. In this paper we document the present ELENA e-cooling performance at 100 keV, the typical optimisation procedure used during setup, and we investigate possible limitations of the present system.

Slides THPAM1R3 [9.034 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPAM1R3

About •

Received ※ 25 October 2023 — Revised ※ 21 November 2023 — Accepted ※ 21 November 2023 — Issued ※ 02 December 2023

Cite •

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