COOL2013 - List of Authors (Joergensen, L.V.)

Paper

Title

Page

AD Status and Consolidation Plans

36

T. Eriksson, M.E. Angoletta, L. Arnaudon, P. Belochitskii, L. Bojtár, M. Calviani, F. Caspers, S. Federmann, L.V. Jørgensen, R. Louwerse, C. Oliveira, G. Tranquille
CERN, Geneva, Switzerland

The CERN Antiproton Decelerator (AD) has now completed it’s 12^th year of supplying low-energy antiproton beams for the successful physics program. Most of the machine’s key components are in operation since more than 25 years and prompted by the approval of the ELENA project, a substantial consolidation program is now being launched to ensure continued reliable operation. Over the course of the next few years a progressive renovation of the AD-Target area and the AD-ring with all the associated systems will take place. Status and performance of the AD are presented along with an overview of planned and ongoing consolidation activities with emphasis on stochastic and electron beam cooling.

Slides MOPM2HA02 [1.470 MB]

WEPPO15

ELENA: From the First Ideas to the Project

130

G. Tranquille, P. Belochitskii, T. Eriksson, L.V. Jørgensen, S. Maury
CERN, Geneva, Switzerland
W. Oelert
FZJ, Jülich, Germany

The LEIR electron cooler was successfully commissioned in 2006 and is used to routinely cool and accumulate high brightness beams of Pb⁵⁴⁺ ions for the LHC. Some initial measurements on the performance of the device were reported in 2007 but did not fully study the influence of the electron beam current and density distribution on beam cooling. We present a compilation of measurements performed over the last years during dedicated machine study sessions which aim to shed some light as to the effectiveness of electron cooling with hollow beams.

Poster WEPPO15 [2.817 MB]

WEPPO16

The ELENA Electron Cooler: Parameter Choice and Expected Performance

133

G. Tranquille, A. Frassier, L.V. Jørgensen
CERN, Geneva, Switzerland

Electron cooling will be central to the success of the ELENA project which aims to increase by a factor of up to 100 the number of antiprotons available for the trap experiments. Because of the tight space constraints, the design of the device will be based on the compact electron cooler in operation on the S-LSR ring in Kyoto. The biggest challenge will be to generate a cold and stable electron beam at an energy of just 55 eV in order to cool the 100 keV antiprotons. The use of photocathodes is excluded because their relatively short lifetimes would require too many vacuum interventions during operations. We present the design parameters of our cooler as well as the results of the cooling performance simulations made with BetaCool and on-going work into "cold" cathodes.

Poster WEPPO16 [2.939 MB]

Paper	Title	Page
MOPM2HA02	AD Status and Consolidation Plans	36
	T. Eriksson, M.E. Angoletta, L. Arnaudon, P. Belochitskii, L. Bojtár, M. Calviani, F. Caspers, S. Federmann, L.V. Jørgensen, R. Louwerse, C. Oliveira, G. Tranquille CERN, Geneva, Switzerland
	The CERN Antiproton Decelerator (AD) has now completed it’s 12^th year of supplying low-energy antiproton beams for the successful physics program. Most of the machine’s key components are in operation since more than 25 years and prompted by the approval of the ELENA project, a substantial consolidation program is now being launched to ensure continued reliable operation. Over the course of the next few years a progressive renovation of the AD-Target area and the AD-ring with all the associated systems will take place. Status and performance of the AD are presented along with an overview of planned and ongoing consolidation activities with emphasis on stochastic and electron beam cooling.
	Slides MOPM2HA02 [1.470 MB]

WEPPO15	ELENA: From the First Ideas to the Project	130
	G. Tranquille, P. Belochitskii, T. Eriksson, L.V. Jørgensen, S. Maury CERN, Geneva, Switzerland W. Oelert FZJ, Jülich, Germany
	The LEIR electron cooler was successfully commissioned in 2006 and is used to routinely cool and accumulate high brightness beams of Pb⁵⁴⁺ ions for the LHC. Some initial measurements on the performance of the device were reported in 2007 but did not fully study the influence of the electron beam current and density distribution on beam cooling. We present a compilation of measurements performed over the last years during dedicated machine study sessions which aim to shed some light as to the effectiveness of electron cooling with hollow beams.
	Poster WEPPO15 [2.817 MB]

WEPPO16	The ELENA Electron Cooler: Parameter Choice and Expected Performance	133
	G. Tranquille, A. Frassier, L.V. Jørgensen CERN, Geneva, Switzerland
	Electron cooling will be central to the success of the ELENA project which aims to increase by a factor of up to 100 the number of antiprotons available for the trap experiments. Because of the tight space constraints, the design of the device will be based on the compact electron cooler in operation on the S-LSR ring in Kyoto. The biggest challenge will be to generate a cold and stable electron beam at an energy of just 55 eV in order to cool the 100 keV antiprotons. The use of photocathodes is excluded because their relatively short lifetimes would require too many vacuum interventions during operations. We present the design parameters of our cooler as well as the results of the cooling performance simulations made with BetaCool and on-going work into "cold" cathodes.
	Poster WEPPO16 [2.939 MB]