Charge breeding of light metallic ions: Prospects for SPIRAL

Delahaye, P.; Maunoury, L.; Vondrasek, R.

doi:10.1016/j.nima.2012.07.016

Cited by 12 publications

(11 citation statements)

References 25 publications

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“…Based on an early version of the Phoenix charge breeder used at ISOLDE for charge breeding studies [12,13], the SPIRAL 1 charge breeder has been upgraded in the frame of the EMILIE project [26] to benefit from the latest advances in the field [27,28]. The upgraded charge breeder is using ultra-high vacuum compliant components, including an Al plasma chamber.…”

Section: Ecr Charge Breeder Performancesmentioning

confidence: 99%

New exotic beams from the SPIRAL 1 upgrade

Delahaye

Dubois

Maunoury

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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Since 2001, the SPIRAL 1 facility has been one of the pioneering facilities in ISOL techniques for reaccelerating radioactive ion beams: the fragmentation of the heavy ion beams of GANIL on graphite targets and subsequent ionization in the Nanogan ECR ion source has permitted to deliver beams of gaseous elements (He, N, O, F, Ne, Ar, Kr) to numerous experiments. Thanks to the CIME cyclotron, energies up to 20 AMeV could be obtained. In 2014, the facility was stopped to undertake a major upgrade, with the aim to extend the production capabilities of SPIRAL 1 to a number of new elements. This upgrade, which is presently under commissioning, consists in the integration of an ECR booster in the SPIRAL 1 beam line to charge breed the beam of different 1+ sources. A FEBIAD source (the so-called VADIS from ISOLDE) was chosen to be the future workhorse for producing many metallic ion beams. This source was coupled to the SPIRAL 1 graphite targets and tested on-line with different beams at GANIL. The charge breeder is an upgraded version of the Phoenix booster which was previously tested in ISOLDE. It was lately commissioned at LPSC and more recently in the SPIRAL 1 beam lines with stable beams. The upgrade additionally permits the use of other target material than graphite. In particular, the use of fragmentation targets will permit to produce higher intensities than from projectile fragmentation, and thin targets of high Z will be used for producing beams by fusion-evaporation. The performances of the aforementioned ingredients of the upgrade (targets, 1+ source and charge breeder) have been and are still being optimized in the frame of different European projects (EMILIE, ENSAR and ENSAR2). The upgraded SPIRAL 1 facility will provide soon its first new beams for physics and further beam development are undertaken to prepare for the next AGATA campaign. The results obtained during the on-line commissioning period permit to evaluate intensities for new beams from the upgraded facility.

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Section: Ecr Charge Breeder Performancesmentioning

confidence: 99%

New exotic beams from the SPIRAL 1 upgrade

Delahaye

Dubois

Maunoury

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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“…These concern, for example, the study of the 1+ beam capture under different conditions using the Phoenix ECR charge breeder at LPSC, [5][6][7] the capture of light ions using the Argonne National Laboratory (ANL) ECR charge breeder, 8,9 and the charge breeding of carbon beams at LPSC. 10 A prototype of hot 1+ ECR ion source was also developed by LPSC.…”

Section: B Emilie's Experimentsmentioning

confidence: 99%

“…6 The SPIRAL 1 charge breeder makes use of an early version of Phoenix tested at ISOLDE 11 which has been upgraded to make use of UHV and pure aluminum Al components, an optimized gas injection system, an electrostatic quadrupole triplet, and movable grounded tube at injection to allow more possibilities to tune the 1+ beam optics. 9 The device is now under test at LPSC. 12 The ECR charge breeder for SPES, recently tested at LPSC, has shown very good performances for Rb and Cs ions, 13 with a very low emittance of the charge bred beams and an excellent stability.…”

Section: B Emilie's Experimentsmentioning

confidence: 99%

“…The latest versions of the Phoenix charge breeder 6,9,13 incorporate a number of modifications which resulted in a similar improvement: the iron cone at injection which was originally truncated for the passage of the RF port was redesigned in order to restore the magnetic field symmetry at injection. The axial magnetic field gradient was finely tuned by means of two movable iron rings mounted around the hexapole, to yield best efficiencies with Na + ions.…”

Section: B Improvement Of Performancesmentioning

confidence: 99%

“…6 The grounded tube of the LPSC charge breeder was replaced by a conductance 22 which has been found beneficial for the HF coupling and the efficiency for Ar ions. The SPIRAL charge breeder 9 incorporates a movable grounded tube similar to the CARIBU charge breeder. Particular efforts were done to optimize the vacuum level, as a low residual gas pressure was found to be beneficial for the overall charge breeding efficiency in the CARIBU 23 and in the LPSC charge breeder.…”

Section: B Improvement Of Performancesmentioning

confidence: 99%

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