Earlier we reported an ion current jump which was observed at a fixed negative biased disc potential in the 6.4GHz ECR ion source at VECC,Kolkata.In a recent experiment with neon ions,we measured the time spectra of t...Earlier we reported an ion current jump which was observed at a fixed negative biased disc potential in the 6.4GHz ECR ion source at VECC,Kolkata.In a recent experiment with neon ions,we measured the time spectra of the ion current and observed the presence of a burst frequency in the kilohertz range.This frequency shows a correlated jump with the ion current jump described above.Another interesting feature is that the observed burst frequency shows a good linear correlation with the extracted ion current.The higher the ion current,the higher is the burst frequency.This means that current per burst is a constant factor;when there are more number of bursts,the current also increases.展开更多
In this paper the first results of the new ECR source at the KVI are presented.The source has been built following the design of Jyv(?)skyl(?) University,which is based on the AECR-U of LBNL.As the commissioning is go...In this paper the first results of the new ECR source at the KVI are presented.The source has been built following the design of Jyv(?)skyl(?) University,which is based on the AECR-U of LBNL.As the commissioning is going on,it seems that the extraction and analysing systems inherited from the old source are the limiting factors for the performance of the new source.Beam currents achieved with the source are at the moment a factor of 3 lower than the AECR source used at the Jyv(?)skyl(?) University.Further modifications to improve the source performance will be discussed.展开更多
The design of each component of the Multipurpose Superconducting ECR Ion Source(MS-ECRIS) has been completed and some items are ready.The magnets and the cryostat are under construction at ACCEL and the commissioning ...The design of each component of the Multipurpose Superconducting ECR Ion Source(MS-ECRIS) has been completed and some items are ready.The magnets and the cryostat are under construction at ACCEL and the commissioning is scheduled for March 2007.The mechanical have been optimized and their construction is under way;the microwave system is under refurbishment and the 65kV power supply is available and upgraded for afterglow operations.Pumping and extraction system were adapted to the EIS testbench of GSI Darmstadt.The description of each part will be given in the paper along with a schedule of the forthcoming development and experiments.展开更多
文摘Earlier we reported an ion current jump which was observed at a fixed negative biased disc potential in the 6.4GHz ECR ion source at VECC,Kolkata.In a recent experiment with neon ions,we measured the time spectra of the ion current and observed the presence of a burst frequency in the kilohertz range.This frequency shows a correlated jump with the ion current jump described above.Another interesting feature is that the observed burst frequency shows a good linear correlation with the extracted ion current.The higher the ion current,the higher is the burst frequency.This means that current per burst is a constant factor;when there are more number of bursts,the current also increases.
文摘In this paper the first results of the new ECR source at the KVI are presented.The source has been built following the design of Jyv(?)skyl(?) University,which is based on the AECR-U of LBNL.As the commissioning is going on,it seems that the extraction and analysing systems inherited from the old source are the limiting factors for the performance of the new source.Beam currents achieved with the source are at the moment a factor of 3 lower than the AECR source used at the Jyv(?)skyl(?) University.Further modifications to improve the source performance will be discussed.
基金Supported through EURONS (European Commission Contract no.506065)
文摘The design of each component of the Multipurpose Superconducting ECR Ion Source(MS-ECRIS) has been completed and some items are ready.The magnets and the cryostat are under construction at ACCEL and the commissioning is scheduled for March 2007.The mechanical have been optimized and their construction is under way;the microwave system is under refurbishment and the 65kV power supply is available and upgraded for afterglow operations.Pumping and extraction system were adapted to the EIS testbench of GSI Darmstadt.The description of each part will be given in the paper along with a schedule of the forthcoming development and experiments.
