| Paper | Title | Page |
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| MOPWA047 | Start to End Simulation of High Current Injector using TRACEWIN Code | 223 |
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High Current Injector (HCI) is an alternate injector to superconducting linac at IUAC in addition to pelletron. It consists mainly of high temperature superconducting ECR ion source (PKDELIS), radio frequency quadrupole (RFQ)* and a drift tube linac (DTL)**. The ions of mass to charge (A/q) ratio of 6 are analysed initially and accelerated through RFQ and DTL to a total energy of 1.8 MeV/u. The different energy regimes connecting the accelerating stages are named as low, medium and high energy beam transport section (LEBT, MEBT and HEBT). The energy spread of beam increases from 0.02% at ECR source to 0.5% at the DTL exit. An ion beam of normalized transverse and longitudinal emittance of 0.03 pi mm-mrad and 0.3 keV/u-ns has been considered at the start for the simulation of ion optics using TRACEWIN*** code. The whole beam transport system has been designed using GICOSY, TRANSPORT and TRACE 3D codes piecewise and TRACEWIN code is used to simulate whole ion optics from start to end including acceleration stages such as RFQ and DTL. Simulation results shows that beam can be injected through LEBT, MEBT and HEBT into LINAC without significant emittance growth and beam loss.
* Sugam Kumar et al., Proc. of InPAC-2011, IUAC, New Delhi ** B.P. Ajith Kumar et al., Proc. of InPAC-2009, RRCAT, Indore *** http://irfu.cea.fr/Sacm/logiciels/index3.php |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPWA047 | |
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| MOPWA048 | Transverse Emittance Measurement for Low Energy Ion Beams Using Quadrupole Scan Method | 226 |
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Low energy ion beam facility (LEIBF) * at IUAC consists of all permanent magnet 10 Ghz electron cyclotron resonance (ECR) ion source (NANOGUN) ** along with 400 kV high voltage accelerating platform, a switching cum analysing magnet and electrostatic quadrupoles. Higher beam currents of heavy charge states and low energy of ion beams puts tremendous challenge to transport the ion beam from source to target. The normalized emittance of analysed ion beam is measured for specific charge to mass ratio using electrostatic quadrupole scan method *** for various source parameters like RF power and injection pressure of gas etc. For various m/q ratios, the normalized transverse emittance ranges from 0.1 to 0.6 mm-mrad. It is attributed to beam rotation induced by ECR axial magnetic field, effect of ion temperature in plasma, non linear electric fields and space charge etc which play a significant role in emittance growth.
* A. Mandal et. al. Proceedings of IPAC2011, WEPC011, San Sebastián, Spain ** D Kanjilal et. al. Indian J. Pure Appl. Phys. 39 (2001) 25 *** I. G. Brown:The physics and technology of ion sources |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPWA048 | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |