EBIS and EBIT - Spallation Neutron Source

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dn i dt n e n o e coll i Charge balance Win by ionisation, charge exchange, radiative radiation Loss by ionisation, charge exchange, radiative radiation, confinement of heated ions ion n ion RR n RR n ion i1 i chex n chex n ii1 kT w ion i1 ieU exp kT ieU i w ion ii1 i1 i n i i1 ii1 i i1 i i1 2-step <strong>and</strong> multiple-step processes are important but are neglected! The overestimation by Lotz‘s cross section formula partially compensates for it.
Results of charge breeding simulations for Pb at 5250 eV Relative Abundance % 80 60 40 20 Relative Abundance % 80 60 40 20 Confinement without losses <strong>EBIT</strong> mode with neutralisation at j=10 14 0.001 0.01 0.1 1 10 100 1000 j 54 Cb/cm 0.001 0.01 0.1 1 10 100 1000 j 2 2 Cb/cm 1 Relative Abundance 0.1 0.01 0.001 Relative Abundance % 80 60 40 20 14 0.001 0.01 0.1 1 10 100 1000 j Confinement with charge exchange at 10 -8 mbar Confinement with radiative recombination 54 Cb/cm2 0.001 0.01 0.1 1 10 100 1000 j 2 Cb/cm
Page 1 and 2: EBIS and EBIT Reinard Becker, Goeth
Page 3 and 4: electron gun U(Z) Principles of EBI
Page 5 and 6: Cross sections (cm 2 ) 10 -15 10 -1
Page 7 and 8: Ionisation energies by C. Moore
Page 9 and 10: 10 -3 Pressure (mbar) 10 -6 10 -9 1
Page 11 and 12: Electron energy (eV) 10 5 10 4 10 3
Page 13: In EBIT injected ions could be trap
Page 17 and 18: 40 years of EBIS history Device yea
Page 19 and 20: BNL-EBIS results and projections 4
Page 21 and 22: Device year place name w/c/r Bmax l
Page 23 and 24: future applications for EBITSs
Page 25 and 26: Super-compression in CRYEBIS-I (197
Page 27 and 28: 0.6 Relative abundance 0.4 0.2 aver
Page 29: Conclusions EBISes and EBITs are al

EBIS and EBIT - Spallation Neutron Source

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