Self-pinched transport of an intense proton beam
Ottinger, P. F. ; Young, F. C. ; Stephanakis, S. J. ; Rose, D. V. ; Neri, J. M. ; Weber, B. V. ; Myers, M. C. ; Hinshelwood, D. D. ; Mosher, D.
[S.l.] : American Institute of Physics (AIP)
Published 2000
[S.l.] : American Institute of Physics (AIP)
Published 2000
| ISSN: |
1089-7674
|
|---|---|
| Source: |
AIP Digital Archive
|
| Topics: |
Physics
|
| Notes: |
Ion beam self-pinched transport (SPT) experiments have been carried out using a 1.1-MeV, 100-kA proton beam. A Rutherford scattering diagnostic and a LiF nuclear activation diagnostic measured the number of protons within a 5 cm radius at 50 cm into the transport region that was filled with low-pressure helium. Time-integrated signals from both diagnostics indicate self-pinching of the ion beam in a helium pressure window between 35 and 80 mTorr. Signals from these two diagnostics are consistent with ballistic transport at pressures above and below this SPT pressure window. Interferometric measurements of electron densities during beam injection into vacuum are consistent with ballistic transport with co-moving electrons. Interferometric measurements for beam injection into helium show that the electron density increases quadratically with pressure through the SPT window and roughly linearly with pressure above the SPT window. The ionization fraction of the helium plateaus at about 1.5% for pressures above 80 mTorr. In the SPT window, the electron density is 3 to 20 times the beam density. Numerical simulations of these beam transport experiments produce results that are in qualitative agreement with the experimental measurements. © 2000 American Institute of Physics.
|
| Type of Medium: |
Electronic Resource
|
| URL: |
| _version_ | 1798289732167270401 |
|---|---|
| autor | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. |
| autorsonst | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. |
| book_url | http://dx.doi.org/10.1063/1.873803 |
| datenlieferant | nat_lic_papers |
| hauptsatz | hsatz_simple |
| identnr | NLZ219359148 |
| iqvoc_descriptor_title | iqvoc_00000124:transport |
| issn | 1089-7674 |
| journal_name | Physics of Plasmas |
| materialart | 1 |
| notes | Ion beam self-pinched transport (SPT) experiments have been carried out using a 1.1-MeV, 100-kA proton beam. A Rutherford scattering diagnostic and a LiF nuclear activation diagnostic measured the number of protons within a 5 cm radius at 50 cm into the transport region that was filled with low-pressure helium. Time-integrated signals from both diagnostics indicate self-pinching of the ion beam in a helium pressure window between 35 and 80 mTorr. Signals from these two diagnostics are consistent with ballistic transport at pressures above and below this SPT pressure window. Interferometric measurements of electron densities during beam injection into vacuum are consistent with ballistic transport with co-moving electrons. Interferometric measurements for beam injection into helium show that the electron density increases quadratically with pressure through the SPT window and roughly linearly with pressure above the SPT window. The ionization fraction of the helium plateaus at about 1.5% for pressures above 80 mTorr. In the SPT window, the electron density is 3 to 20 times the beam density. Numerical simulations of these beam transport experiments produce results that are in qualitative agreement with the experimental measurements. © 2000 American Institute of Physics. |
| package_name | American Institute of Physics (AIP) |
| publikationsjahr_anzeige | 2000 |
| publikationsjahr_facette | 2000 |
| publikationsjahr_intervall | 7999:2000-2004 |
| publikationsjahr_sort | 2000 |
| publikationsort | [S.l.] |
| publisher | American Institute of Physics (AIP) |
| reference | 7 (2000), S. 346-358 |
| search_space | articles |
| shingle_author_1 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. |
| shingle_author_2 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. |
| shingle_author_3 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. |
| shingle_author_4 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. |
| shingle_catch_all_1 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. Self-pinched transport of an intense proton beam Ion beam self-pinched transport (SPT) experiments have been carried out using a 1.1-MeV, 100-kA proton beam. A Rutherford scattering diagnostic and a LiF nuclear activation diagnostic measured the number of protons within a 5 cm radius at 50 cm into the transport region that was filled with low-pressure helium. Time-integrated signals from both diagnostics indicate self-pinching of the ion beam in a helium pressure window between 35 and 80 mTorr. Signals from these two diagnostics are consistent with ballistic transport at pressures above and below this SPT pressure window. Interferometric measurements of electron densities during beam injection into vacuum are consistent with ballistic transport with co-moving electrons. Interferometric measurements for beam injection into helium show that the electron density increases quadratically with pressure through the SPT window and roughly linearly with pressure above the SPT window. The ionization fraction of the helium plateaus at about 1.5% for pressures above 80 mTorr. In the SPT window, the electron density is 3 to 20 times the beam density. Numerical simulations of these beam transport experiments produce results that are in qualitative agreement with the experimental measurements. © 2000 American Institute of Physics. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_catch_all_2 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. Self-pinched transport of an intense proton beam Ion beam self-pinched transport (SPT) experiments have been carried out using a 1.1-MeV, 100-kA proton beam. A Rutherford scattering diagnostic and a LiF nuclear activation diagnostic measured the number of protons within a 5 cm radius at 50 cm into the transport region that was filled with low-pressure helium. Time-integrated signals from both diagnostics indicate self-pinching of the ion beam in a helium pressure window between 35 and 80 mTorr. Signals from these two diagnostics are consistent with ballistic transport at pressures above and below this SPT pressure window. Interferometric measurements of electron densities during beam injection into vacuum are consistent with ballistic transport with co-moving electrons. Interferometric measurements for beam injection into helium show that the electron density increases quadratically with pressure through the SPT window and roughly linearly with pressure above the SPT window. The ionization fraction of the helium plateaus at about 1.5% for pressures above 80 mTorr. In the SPT window, the electron density is 3 to 20 times the beam density. Numerical simulations of these beam transport experiments produce results that are in qualitative agreement with the experimental measurements. © 2000 American Institute of Physics. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_catch_all_3 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. Self-pinched transport of an intense proton beam Ion beam self-pinched transport (SPT) experiments have been carried out using a 1.1-MeV, 100-kA proton beam. A Rutherford scattering diagnostic and a LiF nuclear activation diagnostic measured the number of protons within a 5 cm radius at 50 cm into the transport region that was filled with low-pressure helium. Time-integrated signals from both diagnostics indicate self-pinching of the ion beam in a helium pressure window between 35 and 80 mTorr. Signals from these two diagnostics are consistent with ballistic transport at pressures above and below this SPT pressure window. Interferometric measurements of electron densities during beam injection into vacuum are consistent with ballistic transport with co-moving electrons. Interferometric measurements for beam injection into helium show that the electron density increases quadratically with pressure through the SPT window and roughly linearly with pressure above the SPT window. The ionization fraction of the helium plateaus at about 1.5% for pressures above 80 mTorr. In the SPT window, the electron density is 3 to 20 times the beam density. Numerical simulations of these beam transport experiments produce results that are in qualitative agreement with the experimental measurements. © 2000 American Institute of Physics. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_catch_all_4 | Ottinger, P. F. Young, F. C. Stephanakis, S. J. Rose, D. V. Neri, J. M. Weber, B. V. Myers, M. C. Hinshelwood, D. D. Mosher, D. Self-pinched transport of an intense proton beam Ion beam self-pinched transport (SPT) experiments have been carried out using a 1.1-MeV, 100-kA proton beam. A Rutherford scattering diagnostic and a LiF nuclear activation diagnostic measured the number of protons within a 5 cm radius at 50 cm into the transport region that was filled with low-pressure helium. Time-integrated signals from both diagnostics indicate self-pinching of the ion beam in a helium pressure window between 35 and 80 mTorr. Signals from these two diagnostics are consistent with ballistic transport at pressures above and below this SPT pressure window. Interferometric measurements of electron densities during beam injection into vacuum are consistent with ballistic transport with co-moving electrons. Interferometric measurements for beam injection into helium show that the electron density increases quadratically with pressure through the SPT window and roughly linearly with pressure above the SPT window. The ionization fraction of the helium plateaus at about 1.5% for pressures above 80 mTorr. In the SPT window, the electron density is 3 to 20 times the beam density. Numerical simulations of these beam transport experiments produce results that are in qualitative agreement with the experimental measurements. © 2000 American Institute of Physics. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_title_1 | Self-pinched transport of an intense proton beam |
| shingle_title_2 | Self-pinched transport of an intense proton beam |
| shingle_title_3 | Self-pinched transport of an intense proton beam |
| shingle_title_4 | Self-pinched transport of an intense proton beam |
| sigel_instance_filter | dkfz geomar wilbert ipn albert |
| source_archive | AIP Digital Archive |
| timestamp | 2024-05-06T08:05:30.694Z |
| titel | Self-pinched transport of an intense proton beam |
| titel_suche | Self-pinched transport of an intense proton beam |
| topic | U |
| uid | nat_lic_papers_NLZ219359148 |