COOL2023 - List of Authors (Cenede, J.)

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)

TUPAM2R1	Status of Beam Instrumentation at the Electron Beam Test Stand at CERN	16
	M. Sameed, M. Ady, S. Burger, J. Cenede, A.R. Churchman, T. Coiffet, W. Devauchelle, A. Ganesh, F. Guillot-Vignot, A.J. Kolehmainen, S. Mazzoni, D. Perini, A. Rossi, S. Sadovich, Y.E. Sahin, G. Schneider, O. Sedláček, C.C. Sequeiro, K. Sidorowski, M. Toscan du Plantier, R. Veness, M. Wendt CERN, Meyrin, Switzerland P. Forck, S. Udrea GSI, Darmstadt, Germany O. Sedláček, O. Stringer, H.D. Zhang Cockcroft Institute, Warrington, Cheshire, United Kingdom O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang The University of Liverpool, Liverpool, United Kingdom
	An electron beam test stand has been designed and constructed at CERN as part of the High Luminosity LHC (HL-LHC) project, in collaboration with the ARIES project, to test components related to the Hollow Electron Lens (HL-LHC) and the GSI Space Charge Compensation Electron Lens (ARIES). This comprehensive test facility incorporates normal conducting solenoid magnets, including horizontal and vertical correctors, which generate fields of fractional Tesla magnitude. It is equipped with a range of beam diagnostics including YAG screens, a multi-channel pin-hole Faraday cup, a beam position monitor, and a beam gas curtain profile monitor combined with an OTR screen. Additionally, a Faraday cup collector is integrated into the setup. This talk provides an overview of the electron beam test stand (EBTS), highlighting the design and capabilities of the various beam instruments. Details of the construction, results of tests with pulsed electron beams, and preparations for tests with DC beam are also presented. The facility has the potential to be a valuable tool for advancing the development of electron beam technologies including sources and instrumentation for electron cooling devices.
	Slides TUPAM2R1 [9.671 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-COOL2023-TUPAM2R1
About •	Received ※ 26 October 2023 — Accepted ※ 20 November 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOSRP06	A Test Bench for Characterizing Electron Cooler Components at up to -80 kVDC	61
	G. Khatri, J. Cenede, A. Frassier, G. Tranquille CERN, Meyrin, Switzerland
	During the upcoming Long Shutdown 3 (LS3), the electron cooler of CERN’s Antiproton Decelerator (AD) will be replaced by a new electron cooler. The present electron cooler operates at the maximum energy of about 27keV. However, the new device will have electron collector and electron gun with the possibility of operating at up to 68keV electron energy. To characterize the gun and the collector at this higher energy, a test bench has been built and put in operation. The test bench is equipped with a 1.5 m drift solenoid operating with a maximum magnetic field of 1000 Gauss, and a faraday cage with a high voltage platform that can be biased up to - 80 kV DC. The first element of the new AD electron cooler, the electron collector, is presently being tested on the test bench. In this poster we describe in detail the main elements of the test stand, give some highlights of the ongoing tests with the new collector and present future plans.
	Poster THPOSRP06 [11.398 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP06
About •	Received ※ 01 February 2024 — Revised ※ 03 February 2024 — Accepted ※ 03 February 2024 — Issued ※ 05 March 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOSRP10	Development of a Field Emission Electron Gun for Low Energy Electron Cooling	72
	G. Tranquille, J. Cenede, B. Galante, E.-S. Welker CERN, Meyrin, Switzerland
	The use of carbon nanotubes (CNT) as a cold electron source for a low energy electron cooler has been studied in detail. To fully characterise different CNT arrays (conditioning process, emitted current, lifetime) and to investigate the optimum electrical configuration of the source to be used in an electron gun, a cold cathode test bench (CCTB) has been set up. From the measurements performed on the CCTB, an electron gun has been designed, constructed and is being tested to measure the properties of an electron gun using a larger (4cm diameter) CNT array as the source. The CCTB has been modified to incorporate a beam transport system as well as the relevant diagnostics needed to perform the experiments. The results will be compared to the CST Particle Studio simulations and will be used to optimise the design for use in the ELENA low energy electron cooler.
	Poster THPOSRP10 [5.893 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP10
About •	Received ※ 20 October 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)

TUPAM2R1

Status of Beam Instrumentation at the Electron Beam Test Stand at CERN

16

M. Sameed, M. Ady, S. Burger, J. Cenede, A.R. Churchman, T. Coiffet, W. Devauchelle, A. Ganesh, F. Guillot-Vignot, A.J. Kolehmainen, S. Mazzoni, D. Perini, A. Rossi, S. Sadovich, Y.E. Sahin, G. Schneider, O. Sedláček, C.C. Sequeiro, K. Sidorowski, M. Toscan du Plantier, R. Veness, M. Wendt
CERN, Meyrin, Switzerland
P. Forck, S. Udrea
GSI, Darmstadt, Germany
O. Sedláček, O. Stringer, H.D. Zhang
Cockcroft Institute, Warrington, Cheshire, United Kingdom
O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang
The University of Liverpool, Liverpool, United Kingdom

An electron beam test stand has been designed and constructed at CERN as part of the High Luminosity LHC (HL-LHC) project, in collaboration with the ARIES project, to test components related to the Hollow Electron Lens (HL-LHC) and the GSI Space Charge Compensation Electron Lens (ARIES). This comprehensive test facility incorporates normal conducting solenoid magnets, including horizontal and vertical correctors, which generate fields of fractional Tesla magnitude. It is equipped with a range of beam diagnostics including YAG screens, a multi-channel pin-hole Faraday cup, a beam position monitor, and a beam gas curtain profile monitor combined with an OTR screen. Additionally, a Faraday cup collector is integrated into the setup. This talk provides an overview of the electron beam test stand (EBTS), highlighting the design and capabilities of the various beam instruments. Details of the construction, results of tests with pulsed electron beams, and preparations for tests with DC beam are also presented. The facility has the potential to be a valuable tool for advancing the development of electron beam technologies including sources and instrumentation for electron cooling devices.

Slides TUPAM2R1 [9.671 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-COOL2023-TUPAM2R1

About •

Received ※ 26 October 2023 — Accepted ※ 20 November 2023 — Issued ※ 02 December 2023

Cite •

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

THPOSRP06

A Test Bench for Characterizing Electron Cooler Components at up to -80 kVDC

61

G. Khatri, J. Cenede, A. Frassier, G. Tranquille
CERN, Meyrin, Switzerland

During the upcoming Long Shutdown 3 (LS3), the electron cooler of CERN’s Antiproton Decelerator (AD) will be replaced by a new electron cooler. The present electron cooler operates at the maximum energy of about 27keV. However, the new device will have electron collector and electron gun with the possibility of operating at up to 68keV electron energy. To characterize the gun and the collector at this higher energy, a test bench has been built and put in operation. The test bench is equipped with a 1.5 m drift solenoid operating with a maximum magnetic field of 1000 Gauss, and a faraday cage with a high voltage platform that can be biased up to - 80 kV DC. The first element of the new AD electron cooler, the electron collector, is presently being tested on the test bench. In this poster we describe in detail the main elements of the test stand, give some highlights of the ongoing tests with the new collector and present future plans.

Poster THPOSRP06 [11.398 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP06

About •

Received ※ 01 February 2024 — Revised ※ 03 February 2024 — Accepted ※ 03 February 2024 — Issued ※ 05 March 2024

Cite •

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

THPOSRP10

Development of a Field Emission Electron Gun for Low Energy Electron Cooling

72

G. Tranquille, J. Cenede, B. Galante, E.-S. Welker
CERN, Meyrin, Switzerland

The use of carbon nanotubes (CNT) as a cold electron source for a low energy electron cooler has been studied in detail. To fully characterise different CNT arrays (conditioning process, emitted current, lifetime) and to investigate the optimum electrical configuration of the source to be used in an electron gun, a cold cathode test bench (CCTB) has been set up. From the measurements performed on the CCTB, an electron gun has been designed, constructed and is being tested to measure the properties of an electron gun using a larger (4cm diameter) CNT array as the source. The CCTB has been modified to incorporate a beam transport system as well as the relevant diagnostics needed to perform the experiments. The results will be compared to the CST Particle Studio simulations and will be used to optimise the design for use in the ELENA low energy electron cooler.

Poster THPOSRP10 [5.893 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP10

About •

Received ※ 20 October 2023 — Accepted ※ 21 November 2023 — Issued ※ 02 December 2023

Cite •

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