Abstract
A very large Paul trap (VLPTRAP) has built to test in-flight collection of DC ion beams. An iterative design process led to a Paul trap that was basically a cylindrical electrode of internal diameter 120 mm with two symmetrically placed coaxial end electrodes that approximated hyperboloids of revolution separated by 106 mm. The trap was operated at up to 20 kV{sub pp} at 1 MHz on the ring cylindrical electrode relative to the end electrodes with buffer gas pressures up to 40 mPa. Ions were delivered to the trap from a 60 keV {sup +}Cs ion gun and electrostatically decelerated to about 100 eV for entrance. After a cooling time of the order of 1 ms, the ions were extracted by biasing the end electrodes. Beam pulses of less than 1 s could be extracted, at repetition rates down to 1 Hz. An overall bunching efficiency of about 0.4% was obtained, resulting from a collection efficiency of 2% and an extraction efficiency of 20%. The trap could hold up to 10{sup 7} ions at a temperature of 1000 K.
Dezfuli, A.M. Ghalambor;
[1]
Moore, R B;
Varfalvy, P;
[2]
Schwarz, S
[3]
- Research Institute of Applied Sciences, Jahad Daneshghahi, Shahid Beheshti University, Tehran (Iran, Islamic Republic of)
- Department of Physics, McGill University, Montreal, QC H3A 2T6 (Canada)
- NSCL/MSU, South Shaw Lane, East Lansing 48824, Michigan (United States)
Citation Formats
Dezfuli, A.M. Ghalambor, Moore, R B, Varfalvy, P, and Schwarz, S.
A very large Paul trap system for in-line capture of high-energy DC radioactive ion beams.
United States: N. p.,
2002.
Web.
doi:10.1063/1.1470064.
Dezfuli, A.M. Ghalambor, Moore, R B, Varfalvy, P, & Schwarz, S.
A very large Paul trap system for in-line capture of high-energy DC radioactive ion beams.
United States.
https://doi.org/10.1063/1.1470064
Dezfuli, A.M. Ghalambor, Moore, R B, Varfalvy, P, and Schwarz, S.
2002.
"A very large Paul trap system for in-line capture of high-energy DC radioactive ion beams."
United States.
https://doi.org/10.1063/1.1470064.
@misc{etde_20618984,
title = {A very large Paul trap system for in-line capture of high-energy DC radioactive ion beams}
author = {Dezfuli, A.M. Ghalambor, Moore, R B, Varfalvy, P, and Schwarz, S}
abstractNote = {A very large Paul trap (VLPTRAP) has built to test in-flight collection of DC ion beams. An iterative design process led to a Paul trap that was basically a cylindrical electrode of internal diameter 120 mm with two symmetrically placed coaxial end electrodes that approximated hyperboloids of revolution separated by 106 mm. The trap was operated at up to 20 kV{sub pp} at 1 MHz on the ring cylindrical electrode relative to the end electrodes with buffer gas pressures up to 40 mPa. Ions were delivered to the trap from a 60 keV {sup +}Cs ion gun and electrostatically decelerated to about 100 eV for entrance. After a cooling time of the order of 1 ms, the ions were extracted by biasing the end electrodes. Beam pulses of less than 1 s could be extracted, at repetition rates down to 1 Hz. An overall bunching efficiency of about 0.4% was obtained, resulting from a collection efficiency of 2% and an extraction efficiency of 20%. The trap could hold up to 10{sup 7} ions at a temperature of 1000 K.}
doi = {10.1063/1.1470064}
journal = []
issue = {1}
volume = {610}
journal type = {AC}
place = {United States}
year = {2002}
month = {Apr}
}
title = {A very large Paul trap system for in-line capture of high-energy DC radioactive ion beams}
author = {Dezfuli, A.M. Ghalambor, Moore, R B, Varfalvy, P, and Schwarz, S}
abstractNote = {A very large Paul trap (VLPTRAP) has built to test in-flight collection of DC ion beams. An iterative design process led to a Paul trap that was basically a cylindrical electrode of internal diameter 120 mm with two symmetrically placed coaxial end electrodes that approximated hyperboloids of revolution separated by 106 mm. The trap was operated at up to 20 kV{sub pp} at 1 MHz on the ring cylindrical electrode relative to the end electrodes with buffer gas pressures up to 40 mPa. Ions were delivered to the trap from a 60 keV {sup +}Cs ion gun and electrostatically decelerated to about 100 eV for entrance. After a cooling time of the order of 1 ms, the ions were extracted by biasing the end electrodes. Beam pulses of less than 1 s could be extracted, at repetition rates down to 1 Hz. An overall bunching efficiency of about 0.4% was obtained, resulting from a collection efficiency of 2% and an extraction efficiency of 20%. The trap could hold up to 10{sup 7} ions at a temperature of 1000 K.}
doi = {10.1063/1.1470064}
journal = []
issue = {1}
volume = {610}
journal type = {AC}
place = {United States}
year = {2002}
month = {Apr}
}