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Lakshmy, P. S.

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MOCO-C03 ECRIS on High Voltage Platform for Engineering and Modifications of Materials 38
 
  • P. Kumar, D. Kanjilal, P. S. Lakshmy, G. Rodrigues
    IUAC, New Delhi
  
  An all permanent magnet electron cyclotron resonance ion source (ECRIS) along with the associated components like 10GHz UHF transmitter, vacuum pumps, vacuum gauges, vacuum pump controllers, gas handling systems with gas bottles, local command and controls systems, etc are set up on a 200kV platform for providing various ion beams having energy in the range of a few tens of keVs to a few MeVs. The capability of ECRIS in producing multiply charged ions is being used for the engineering and modifications of materials, and for understanding charge transfer processes during collision with molecules and dissociation of molecules. The beam currents available from the first few charge states are mainly used for these studies. The 10 GHz all-permanent-magnet ECR ion source on high voltage platform at IUAC has been in regular operation since 2000 for delivering various ion beams for research in materials science, atomic and molecular physics. The salient features of ECRIS based low energy ion beam facility (LEIBF)[*] at IUAC, operational experience of the ion source for producing some of the special beams and some of the exciting experimental results will be presented.

[*]D. Kanjilal, T. Madhu, G. O. Rodrigues, U. K. Rao, C. P. Safvan and A. Roy, Ind. J. of Pure and Appl. Phys. 25 (2001) 39

 
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MOPO-17 Operational Experience with the HTS-ECRIS, PKDELIS 107
 
  • G. Rodrigues, D. Kanjilal, P. Kumar, P. S. Lakshmy, A. Mandal
    IUAC, New Delhi
  
  The high temperature superconducting electron cyclotron resonance ion source (HTS-ECRIS), PKDELIS is in operation since June, 2004. The cryo-coolers have completed about 25000 hours of operation. There were some initial problems with one of the two cryo-coolers for the axial HTS coils, beam extraction and transmission systems at the intermediate location for test run. These were rectified subsequently. Proper X-ray shielding for safe operation were incorporated. X-ray Bremstrahlung measurements on the injection and extraction as a function of negative DC bias voltage are carried out systematically to develop deeper understanding of the ECR plasma production processes. A soft-landing system is developed for studies in charge exchange collisions and potential sputtering. The source and low energy beam transport (LEBT) system is planned to be re-installed on a high voltage platform in the new beam hall III to prepare for injection into high current injector of the superconducting linear accelerator. Recent results of the PKDELIS, operational experience and details of LEBT will be reported.