Nuclear astrophysics studies at LENA: The accelerators
The accelerators of the Laboratory for Experimental Nuclear Astrophysics (LENA) are described. These include a modified 1 MV Van de Graaff accelerator, a new electron cyclotron resonance (ECR) ion source with its 200 kV acceleration system, and the associated beam transport system. The new ECR ion s...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2010-11, Vol.623 (3), p.888-894 |
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| container_title | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment |
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| creator | Cesaratto, J.M. Champagne, A.E. Clegg, T.B. Buckner, M.Q. Runkle, R.C. Stefan, A. |
| description | The accelerators of the Laboratory for Experimental Nuclear Astrophysics (LENA) are described. These include a modified 1
MV Van de Graaff accelerator, a new electron cyclotron resonance (ECR) ion source with its 200
kV acceleration system, and the associated beam transport system. The new ECR ion source utilizes an array of permanent magnets to provide the 87.5
mT solenoidal magnetic field needed for ECR at 2.45
GHz. With 300
W of input radio frequency (RF) power and an extraction voltage of 15
kV, a beam current of 7
mA has been extracted from the source within a measured normalized emittance of
0.19
π
-mm-mrad
. Proton currents in excess of 1
mA can be accelerated to target from the ECR source over the energy range of 90–200
keV. Beam properties have been measured using low-energy resonances in
O
18
(
p
,
γ
)
F
19
and
Al
27
(
p
,
γ
)
Si
28
. The Van de Graaff accelerator can produce
250
μ
A
over the energy range 0.3–1
MeV (and somewhat lower currents at lower energies). This new capability will be crucial in the direct search for low-energy resonances in nuclear reactions of astrophysical significance. |
| doi_str_mv | 10.1016/j.nima.2010.08.104 |
| format | Article |
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MV Van de Graaff accelerator, a new electron cyclotron resonance (ECR) ion source with its 200
kV acceleration system, and the associated beam transport system. The new ECR ion source utilizes an array of permanent magnets to provide the 87.5
mT solenoidal magnetic field needed for ECR at 2.45
GHz. With 300
W of input radio frequency (RF) power and an extraction voltage of 15
kV, a beam current of 7
mA has been extracted from the source within a measured normalized emittance of
0.19
π
-mm-mrad
. Proton currents in excess of 1
mA can be accelerated to target from the ECR source over the energy range of 90–200
keV. Beam properties have been measured using low-energy resonances in
O
18
(
p
,
γ
)
F
19
and
Al
27
(
p
,
γ
)
Si
28
. The Van de Graaff accelerator can produce
250
μ
A
over the energy range 0.3–1
MeV (and somewhat lower currents at lower energies). This new capability will be crucial in the direct search for low-energy resonances in nuclear reactions of astrophysical significance.</description><identifier>ISSN: 0168-9002</identifier><identifier>EISSN: 1872-9576</identifier><identifier>DOI: 10.1016/j.nima.2010.08.104</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Accelerators ; Beams (radiation) ; ECR ion sources ; Electrostatic accelerators ; Energy (nuclear) ; Ion sources ; Nuclear astrophysics ; Nuclear reactions ; Radio frequencies ; Van de Graaff accelerators</subject><ispartof>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2010-11, Vol.623 (3), p.888-894</ispartof><rights>2010 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c333t-fabefe47dbc472723f73843ca73bb71d3493d4562911abdaa362a1a28a1091833</citedby><cites>FETCH-LOGICAL-c333t-fabefe47dbc472723f73843ca73bb71d3493d4562911abdaa362a1a28a1091833</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.nima.2010.08.104$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Cesaratto, J.M.</creatorcontrib><creatorcontrib>Champagne, A.E.</creatorcontrib><creatorcontrib>Clegg, T.B.</creatorcontrib><creatorcontrib>Buckner, M.Q.</creatorcontrib><creatorcontrib>Runkle, R.C.</creatorcontrib><creatorcontrib>Stefan, A.</creatorcontrib><title>Nuclear astrophysics studies at LENA: The accelerators</title><title>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</title><description>The accelerators of the Laboratory for Experimental Nuclear Astrophysics (LENA) are described. These include a modified 1
MV Van de Graaff accelerator, a new electron cyclotron resonance (ECR) ion source with its 200
kV acceleration system, and the associated beam transport system. The new ECR ion source utilizes an array of permanent magnets to provide the 87.5
mT solenoidal magnetic field needed for ECR at 2.45
GHz. With 300
W of input radio frequency (RF) power and an extraction voltage of 15
kV, a beam current of 7
mA has been extracted from the source within a measured normalized emittance of
0.19
π
-mm-mrad
. Proton currents in excess of 1
mA can be accelerated to target from the ECR source over the energy range of 90–200
keV. Beam properties have been measured using low-energy resonances in
O
18
(
p
,
γ
)
F
19
and
Al
27
(
p
,
γ
)
Si
28
. The Van de Graaff accelerator can produce
250
μ
A
over the energy range 0.3–1
MeV (and somewhat lower currents at lower energies). This new capability will be crucial in the direct search for low-energy resonances in nuclear reactions of astrophysical significance.</description><subject>Accelerators</subject><subject>Beams (radiation)</subject><subject>ECR ion sources</subject><subject>Electrostatic accelerators</subject><subject>Energy (nuclear)</subject><subject>Ion sources</subject><subject>Nuclear astrophysics</subject><subject>Nuclear reactions</subject><subject>Radio frequencies</subject><subject>Van de Graaff accelerators</subject><issn>0168-9002</issn><issn>1872-9576</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kE9Lw0AQxRdRsFa_gKccvaTuv2Y34qWUVoVSL_W8TDYTuiVt6k4i9Nu7pZ6dy8DjvWHej7FHwSeCi-J5NzmEPUwkTwK3SdNXbCSskXk5NcU1GyWTzUvO5S27I9rxNKWxI1asB98ixAyoj91xe6LgKaN-qANSBn22WqxnL9lmixl4jy1G6LtI9-ymgZbw4W-P2ddysZm_56vPt4_5bJV7pVSfN1Bhg9rUlddGGqkao6xWHoyqKiNqpUtV62khSyGgqgFUIUGAtCB4KaxSY_Z0uXuM3feA1Lt9oPRGCwfsBnKiMEJpJbRJVnmx-tgRRWzcMSYm8eQEd2dIbufOkNwZkuM2aTqFXi8hTCV-AkZHPuDBYx0i-t7VXfgv_gsn4W7o</recordid><startdate>20101121</startdate><enddate>20101121</enddate><creator>Cesaratto, J.M.</creator><creator>Champagne, A.E.</creator><creator>Clegg, T.B.</creator><creator>Buckner, M.Q.</creator><creator>Runkle, R.C.</creator><creator>Stefan, A.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20101121</creationdate><title>Nuclear astrophysics studies at LENA: The accelerators</title><author>Cesaratto, J.M. ; Champagne, A.E. ; Clegg, T.B. ; Buckner, M.Q. ; Runkle, R.C. ; Stefan, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c333t-fabefe47dbc472723f73843ca73bb71d3493d4562911abdaa362a1a28a1091833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Accelerators</topic><topic>Beams (radiation)</topic><topic>ECR ion sources</topic><topic>Electrostatic accelerators</topic><topic>Energy (nuclear)</topic><topic>Ion sources</topic><topic>Nuclear astrophysics</topic><topic>Nuclear reactions</topic><topic>Radio frequencies</topic><topic>Van de Graaff accelerators</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cesaratto, J.M.</creatorcontrib><creatorcontrib>Champagne, A.E.</creatorcontrib><creatorcontrib>Clegg, T.B.</creatorcontrib><creatorcontrib>Buckner, M.Q.</creatorcontrib><creatorcontrib>Runkle, R.C.</creatorcontrib><creatorcontrib>Stefan, A.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cesaratto, J.M.</au><au>Champagne, A.E.</au><au>Clegg, T.B.</au><au>Buckner, M.Q.</au><au>Runkle, R.C.</au><au>Stefan, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nuclear astrophysics studies at LENA: The accelerators</atitle><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle><date>2010-11-21</date><risdate>2010</risdate><volume>623</volume><issue>3</issue><spage>888</spage><epage>894</epage><pages>888-894</pages><issn>0168-9002</issn><eissn>1872-9576</eissn><abstract>The accelerators of the Laboratory for Experimental Nuclear Astrophysics (LENA) are described. These include a modified 1
MV Van de Graaff accelerator, a new electron cyclotron resonance (ECR) ion source with its 200
kV acceleration system, and the associated beam transport system. The new ECR ion source utilizes an array of permanent magnets to provide the 87.5
mT solenoidal magnetic field needed for ECR at 2.45
GHz. With 300
W of input radio frequency (RF) power and an extraction voltage of 15
kV, a beam current of 7
mA has been extracted from the source within a measured normalized emittance of
0.19
π
-mm-mrad
. Proton currents in excess of 1
mA can be accelerated to target from the ECR source over the energy range of 90–200
keV. Beam properties have been measured using low-energy resonances in
O
18
(
p
,
γ
)
F
19
and
Al
27
(
p
,
γ
)
Si
28
. The Van de Graaff accelerator can produce
250
μ
A
over the energy range 0.3–1
MeV (and somewhat lower currents at lower energies). This new capability will be crucial in the direct search for low-energy resonances in nuclear reactions of astrophysical significance.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.nima.2010.08.104</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0168-9002 |
| ispartof | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2010-11, Vol.623 (3), p.888-894 |
| issn | 0168-9002 1872-9576 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1671343147 |
| source | Access via ScienceDirect (Elsevier) |
| subjects | Accelerators Beams (radiation) ECR ion sources Electrostatic accelerators Energy (nuclear) Ion sources Nuclear astrophysics Nuclear reactions Radio frequencies Van de Graaff accelerators |
| title | Nuclear astrophysics studies at LENA: The accelerators |
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