HIAT 2012 - List of Keywords (emittance)

Keyword: emittance

Paper	Title	Other Keywords	Page
PO03	The RIB Dynamics of the SPIRAL 2 Transfer Line	ion, quadrupole, solenoid, extraction	54
	D. Boutin, F.R. Osswald IPHC, Strasbourg Cedex 2, France N.Yu. Kazarinov JINR, Dubna, Moscow Region, Russia C. Peaucelle IN2P3 IPNL, Villeurbanne, France T. Thuillier LPSC, Grenoble, France
	The design of the SPIRAL 2 RIB extraction and mass analysis results of previous experiences at Ganil (SIRa) and SPIRAL* and concerns the ISOL process. The layout presents different beam sections of optical interest starting with a conventional Einzel lens, a 1 T solenoid, a triplet of magnetic quadrupoles and a magnetic dipole for the mass analysis. The down-stream 1+ ions transfer line to the users is designed following a conservative solution composed of emittance limitation, homothetic betatron matching, passive and symmetrical optical lattices (point to point and unitary transport) as well as beam instrumentation enabling the control of the losses (pepperpots, slits, beam profilers, FC, etc.). The presentation will mainly focus on the description of the beam line, its characteristics and on some side effects which have to be taken into account in order to match the beam properly during the operations. * On Line Isotopic Separator Test Benches at GANIL, R. Anne et al., PAC proceed. ed. IEEE, 1993

PO09	Progress on the RFQ Beam Cooler Design for SPES Project	ion, rfq, vacuum, injection	68
	M.M. Maggiore, F. Chiurlotto, M. Comunian, A. Dainelli, M. De Lazzari, A. Galatà, A. Minarello, A.M. Porcellato, S. Stark INFN/LNL, Legnaro (PD), Italy
	The SPES project is the new Radioactive Ion Beam facility under construction at Laboratori Nazionali of Legnaro, Italy. In this framework in order to improve the beam quality in terms of transversa emittance and energy spread, a study of a new RFQ beam cooler device is in progress. The electromagnetic design of the RFQ section and the electrostatic layout of the injection and extraction regions have been done. The study about the beam dynamic is going on by means of dedicated codes which allow to take into account the interaction of the ions with the buffer gas needed to cool the beams. The preliminary design of the device is carrying on at LNL since 2011 and the feasibility study is funded by V committee of INFN in the framework of REGATA experiment. Both beam dynamics study and the electromagnetic design are presented in this work.

PO14	Feedback of Slow Extraction in CSRm	quadrupole, extraction, feedback, synchrotron	89
	J. Shi, W.P. Chai, J. Li, J.W. Xia, J.C. Yang, Y.J. Yuan IMP, Lanzhou, People's Republic of China
	The transverse tune of the beam in the synchrotron will fluctuate due to the quadrupole current ripple, which lead the spill ripple through the variation of the separatrices area. In order to reduce the ripple of the spill, a pair of fast response quadrupole (FQ) is adopted to compensate the tune ripple caused by other quadrupoles. After using the FQ feedback, the amplitude of the spill ripple within 800Hz has been reduced to 1/10 times from the normal mode. This method will be used in the HITFiL (Heavy Ion Therapy Facility in Lanzhou).

WEC02	Status of the HIE-ISOLDE Project at CERN	linac, cryomodule, vacuum, cryogenics	175
	Y. Kadi, A.P. Bernardes, Y. Blumenfeld, E. Bravin, S. Calatroni, R. Catherall, M.A. Fraser, B. Goddard, D. Parchet, E. Siesling, G. Vandoni, W. Venturini Delsolaro, D. Voulot, L.R. Williams CERN, Geneva, Switzerland
	The HIE-ISOLDE project represents a major upgrade of the ISOLDE facility with a mandate to significantly improve the quality and increase the intensity and energy of radioactive nuclear beams produced at CERN. The project will expand the experimental nuclear physics programme at ISOLDE by focusing on an upgrade of the existing REX linac with a 40 MV superconducting linac comprising thirty-two niobium-on-copper sputter-coated quarter-wave resonators housed in six cryomodules. The new linac will raise the energy of post-accelerated beams from 3 MeV/u to over 10 MeV/u. The upgrade will be staged to first deliver beam energies of 5.5 MeV/u using two high-β cryomodules placed downstream of REX, before the energy variable section of the existing linac is replaced with two low-β cryomodules and two additional high-β cryomodules are installed to attain over 10 MeV/u with full energy variability from as low as 0.45 MeV/u. An overview of the project including a status summary of the different R&D activities and the schedule will be given here.
	Slides WEC02 [19.513 MB]

THB03	Design Sudy for Front-End System at Rare Isotope Science Project (RISP)	rfq, ion, ECR, simulation	207
	E.-S. Kim KNU, Deagu, Republic of Korea J. Bahng, J.G. Hwang, S.W. Jang Kyungpook National University, Daegu, Republic of Korea B. Choi, D. Jeon, B. Kim, H. Kim, S.K. Kim IBS, Daejeon, Republic of Korea
	Heavy ion beams of 400 kW and 70 kW are generated at the RISP by in-flight and ISOL methods, respectively. Front-End system in the RISP consists of 28 GHz superconducting ECR-IS with 10 keV/u, LEBT with two-bends and a multi-harmonic buncher, a RFQ with 81.25 MHz and 300 keV/u, and MEBT with two re-bunchers. The design studies have been performed to optimize the beam and accelerator parameters to meet the required design goals. It is shown that the front-end simulations results can provide the two-charge state beams up to uranium to upstream linac with the required beam emittances. In this paper, we present the design results for the front-end system and on the beam dynamics.
	Slides THB03 [1.942 MB]

THB04	Development of the Intensity and Quality of the Heavy Ion Beams at GSI	ion, rfq, vacuum, injection	211
	L.A. Dahl, W.A. Barth, M.C. Bellachioma, L. Groening, O.K. Kester, M.M. Kirk, D. Ondreka, N. Pyka, P.J. Spiller, J. Stadlmann, H. Vormann, S.G. Yaramyshev GSI, Darmstadt, Germany L.H.J. Bozyk, Y. El-Hayek FIAS, Frankfurt am Main, Germany C. Xiao IAP, Frankfurt am Main, Germany
	For injection into the future FAIR SIS100 synchrotron the GSI linear accelerator UNILAC and synchrotron SIS18 have to provide 1.5·1011 p/spill for the reference U²⁸⁺ beam. The MeVVa ion source extracts 37 emA of U⁴⁺ beam. For improved transmission the RFQ vanes were revised and exchanged. A new ion source terminal with straightforward beam injection into the RFQ is calculated and partly realized for loss free beam transport to the RFQ. To improve the quality of the space charge dominated beam in the DFFD periodic focussing Alvarez section a transverse 4th order resonance was investigated by simulations and experimentally. The multi turn beam injection into the SIS18 requires emittances below βγεx/βγεy=0.8/2.5 [μm]. This suggests introducing a new concept for emittance transfer by solenoidal stripping. A set-up for experimental proof of principle will be installed at the foil stripper. The SIS18 has been equipped with NEG-coated chambers for all magnets and the injection septum. Newly installed ion catchers improve especially the dynamic vacuum pressure. The effect on progress in beam quality development and intensity will be reported.
	Slides THB04 [9.809 MB]