002800127 001__ 2800127
002800127 005__ 20220125174618.0
002800127 0248_ $$aoai:cds.cern.ch:2800127$$pcerncds:FULLTEXT
002800127 037__ $$aCERN-ACC-NOTE-2022-0005
002800127 041__ $$aeng
002800127 100__ $$0AUTHOR|(CDS)2097673$$0AUTHOR|(SzGeCERN)770980$$aPahl, [email protected]$$uCERN
002800127 245__ $$aNonadiabatic electron gun at an electron beam ion source: Commissioning results and charge breeding investigations
002800127 260__ $$c2022
002800127 269__ $$aGeneva$$bCERN$$c20 Jan 2022
002800127 520__ $$aThe electron gun of the REXEBIS charge breeder at the REX/HIE-ISOLDE facility at CERN has been upgraded from a standard magneto-immersed type to a gun using a nonadiabatic magnetic element. The results from the cathode emission and electron beam propagation tests are presented, as well as the charge breeding efficiency for the new design. Complete mass-scans of the extracted beam have been performed from which the level of cathode-originating contaminations could be established, as well as partial pressures of the most abundant residual gases in the ion trapping region. Furthermore, optimal breeding times for a broad range of elements and charge states, either introduced as a gas or externally injected as singly charged ions into the trapping region, are given for different electron currents. From these values, effective electron current densities have been derived. Finally, the axial ion energy distributions of various elements and charge states were also measured, and the derived ion temperatures were correlated with the ion and electron beam overlap factors. This paper was published in PHYSICAL REVIEW ACCELERATORS AND BEAMS 25, 013402 (2022), DOI: 10.1103/PhysRevAccelBeams.25.013402
002800127 595__ $$aCERN EDS
002800127 595__ $$zUNCL
002800127 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
002800127 6531_ $$9CERN$$aelectron gun
002800127 6531_ $$9CERN$$acharge breeding
002800127 6531_ $$9CERN$$ahighly charged ions
002800127 6531_ $$9CERN$$aEBIS
002800127 690C_ $$aCERN
002800127 690C_ $$aINTNOTE
002800127 690C_ $$aPUBLATS
002800127 693__ $$pCERN HIE-ISOLDE
002800127 700__ $$0AUTHOR|(CDS)2126167$$0AUTHOR|(SzGeCERN)735122$$aBidault, Niels Killian [email protected]$$uCERN
002800127 700__ $$0AUTHOR|(CDS)2119484$$0AUTHOR|(SzGeCERN)786119$$aKhatri, [email protected]$$uCERN
002800127 700__ $$0AUTHOR|(CDS)2241189$$0AUTHOR|(SzGeCERN)387544$$aPikin, [email protected]$$uCentro de Investigaciones Energéticas Medioambientales y Tec. (ES)
002800127 700__ $$0AUTHOR|(CDS)2067635$$0AUTHOR|(SzGeCERN)440834$$aWenander, Fredrik John [email protected]$$uCERN
002800127 710__ $$5ATS
002800127 710__ $$aCERN. Geneva. ATS Department
002800127 859__ [email protected]
002800127 8564_ $$82347879$$s3284192$$uhttps://cds.cern.ch/record/2800127/files/CERN-ACC-NOTE-2022-0005.pdf
002800127 916__ $$sn$$w202203
002800127 937__ $$c25 Jan [email protected]
002800127 960__ $$a12
002800127 963__ $$aPUBLIC
002800127 980__ $$aINTNOTEATSPUBL
002800127 980__ $$aNOTE
002800127 980__ $$aPRESSNOTE