Stable Isotrope<\/a> | AMS Prep Laboratory<\/a> | Technical Developments at UCI<\/a><\/p>\n\n\n\n\n\n\n\n<\/a>The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements:<\/p>\n1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV 1.5SDH-2 AMS system) for measuring radiocarbon (on left).\n2. A dedicated companion instrument (Finnegan Delta Plus stable isotope ratio mass spectrometer) for measuring carbon stable isotope<\/a>\u00a0ratios ( 13<\/sup>C\/12<\/sup>C).\n3. A new sample preparation laboratory<\/a> to supplement existing UC Irvine preparation labs to pre-treat, combust, hydrolyze and graphitize radiocarbon samples.<\/td>\n<\/tr>\n\n\nAMS Particle Accelerator<\/h2>\n<\/td>\n<\/tr>\n\n<\/a>The Keck-CCAMS facility operates a 500 kV compact AMS unit from National Electrostatics Corporation (NEC 0.5MV 1.5SDH-2 – see diagram on the left or go to www.pelletron.com). This unit is similar to the 0.5MV systems in \u00a0 Zurich,\u00a0 Georgia and\u00a0 Poznan, but features improved vacuum (four Cryotorr 8’s) plus additional beam diagnostics and corrective steerers as compared to earlier systems.<\/td>\n<\/tr>\n\n\n<\/a>The system is equipped with the NEC 40-sample MC-SNICS Cs sputter ion source (see left). The negative ion beams produced by the ion source are injected into the accelerator tank using a bounced 90\u00b0 double-focusing magnet system (injection magnet) to select the appropriated mass. The fast beam switching (bouncer), for sequential measurement of 14<\/sup>C and the stable isotopes 13<\/sup>C and 12<\/sup>C, is performed by varying the bias voltage on the insulated injection magnet vacuum box.<\/p>\nAt UC Irvine, we have begun modifying the NEC ion source to increase beam current output, achieve better reliability and improve serviceability to reduce instrument downtime associated with ion source maintenance. Operation at 100-150\u00b5A of C–<\/sup> is now routine, and currents of 220\u00b5A have been observed. More details on ion source development can be found at techinical development.<\/td>\n<\/tr>\n\n\n<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\nFor maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n\n\n<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/a>The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements:<\/p>\n1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV 1.5SDH-2 AMS system) for measuring radiocarbon (on left).\n2. A dedicated companion instrument (Finnegan Delta Plus stable isotope ratio mass spectrometer) for measuring carbon stable isotope<\/a>\u00a0ratios ( 13<\/sup>C\/12<\/sup>C).\n3. A new sample preparation laboratory<\/a> to supplement existing UC Irvine preparation labs to pre-treat, combust, hydrolyze and graphitize radiocarbon samples.<\/td>\n<\/tr>\n\n\nAMS Particle Accelerator<\/h2>\n<\/td>\n<\/tr>\n\n<\/a>The Keck-CCAMS facility operates a 500 kV compact AMS unit from National Electrostatics Corporation (NEC 0.5MV 1.5SDH-2 – see diagram on the left or go to www.pelletron.com). This unit is similar to the 0.5MV systems in \u00a0 Zurich,\u00a0 Georgia and\u00a0 Poznan, but features improved vacuum (four Cryotorr 8’s) plus additional beam diagnostics and corrective steerers as compared to earlier systems.<\/td>\n<\/tr>\n\n\n<\/a>The system is equipped with the NEC 40-sample MC-SNICS Cs sputter ion source (see left). The negative ion beams produced by the ion source are injected into the accelerator tank using a bounced 90\u00b0 double-focusing magnet system (injection magnet) to select the appropriated mass. The fast beam switching (bouncer), for sequential measurement of 14<\/sup>C and the stable isotopes 13<\/sup>C and 12<\/sup>C, is performed by varying the bias voltage on the insulated injection magnet vacuum box.<\/p>\nAt UC Irvine, we have begun modifying the NEC ion source to increase beam current output, achieve better reliability and improve serviceability to reduce instrument downtime associated with ion source maintenance. Operation at 100-150\u00b5A of C–<\/sup> is now routine, and currents of 220\u00b5A have been observed. More details on ion source development can be found at techinical development.<\/td>\n<\/tr>\n\n\n<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\nFor maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n\n\n<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV 1.5SDH-2 AMS system) for measuring radiocarbon (on left).\n2. A dedicated companion instrument (Finnegan Delta Plus stable isotope ratio mass spectrometer) for measuring carbon stable isotope<\/a>\u00a0ratios ( 13<\/sup>C\/12<\/sup>C).\n3. A new sample preparation laboratory<\/a> to supplement existing UC Irvine preparation labs to pre-treat, combust, hydrolyze and graphitize radiocarbon samples.<\/td>\n<\/tr>\n\n\nAMS Particle Accelerator<\/h2>\n<\/td>\n<\/tr>\n\n<\/a>The Keck-CCAMS facility operates a 500 kV compact AMS unit from National Electrostatics Corporation (NEC 0.5MV 1.5SDH-2 – see diagram on the left or go to www.pelletron.com). This unit is similar to the 0.5MV systems in \u00a0 Zurich,\u00a0 Georgia and\u00a0 Poznan, but features improved vacuum (four Cryotorr 8’s) plus additional beam diagnostics and corrective steerers as compared to earlier systems.<\/td>\n<\/tr>\n\n\n<\/a>The system is equipped with the NEC 40-sample MC-SNICS Cs sputter ion source (see left). The negative ion beams produced by the ion source are injected into the accelerator tank using a bounced 90\u00b0 double-focusing magnet system (injection magnet) to select the appropriated mass. The fast beam switching (bouncer), for sequential measurement of 14<\/sup>C and the stable isotopes 13<\/sup>C and 12<\/sup>C, is performed by varying the bias voltage on the insulated injection magnet vacuum box.<\/p>\nAt UC Irvine, we have begun modifying the NEC ion source to increase beam current output, achieve better reliability and improve serviceability to reduce instrument downtime associated with ion source maintenance. Operation at 100-150\u00b5A of C–<\/sup> is now routine, and currents of 220\u00b5A have been observed. More details on ion source development can be found at techinical development.<\/td>\n<\/tr>\n\n\n<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\nFor maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n\n\n<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/a>The system is equipped with the NEC 40-sample MC-SNICS Cs sputter ion source (see left). The negative ion beams produced by the ion source are injected into the accelerator tank using a bounced 90\u00b0 double-focusing magnet system (injection magnet) to select the appropriated mass. The fast beam switching (bouncer), for sequential measurement of 14<\/sup>C and the stable isotopes 13<\/sup>C and 12<\/sup>C, is performed by varying the bias voltage on the insulated injection magnet vacuum box.<\/p>\nAt UC Irvine, we have begun modifying the NEC ion source to increase beam current output, achieve better reliability and improve serviceability to reduce instrument downtime associated with ion source maintenance. Operation at 100-150\u00b5A of C–<\/sup> is now routine, and currents of 220\u00b5A have been observed. More details on ion source development can be found at techinical development.<\/td>\n<\/tr>\n\n\n<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\nFor maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n\n\n<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
At UC Irvine, we have begun modifying the NEC ion source to increase beam current output, achieve better reliability and improve serviceability to reduce instrument downtime associated with ion source maintenance. Operation at 100-150\u00b5A of C–<\/sup> is now routine, and currents of 220\u00b5A have been observed. More details on ion source development can be found at techinical development.<\/td>\n<\/tr>\n\n\n<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\nFor maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n\n\n<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\nFor maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n\n\n<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
For maintenance the tank is rolled sideways and the acceleration column is withdrawn from the tank. Maintenance can be carried out by a single person if necessary.<\/td>\n<\/tr>\n
<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\nThe measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n\n<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
The measurement of the stable carbon isotopes is performed in the Faraday cup (rightt) chamber (off-axis Faraday cups) after the high energy 90\u00b0 magnet.<\/p>\n<\/td>\n<\/tr>\n
KCCAMS Facility Stable Isotrope | AMS Prep Laboratory | Technical Developments at UCI The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements: 1. A compact AMS particle accelerator from National Electrostatics Corporation (NEC 0.5MV […]<\/p>\n","protected":false},"author":41,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":0,"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/pages\/115\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.ps.uci.edu\/kccams\/wp-json\/wp\/v2\/media?parent=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"Keck](\"https:\/\/sites.ps.uci.edu\/kccams\/wp-content\/uploads\/sites\/28\/2016\/12\/kccams_croul_hall_05_101703.jpg\")
<\/a>The UC Irvine Keck-CCAMS facility was set up in 2002 with a $2M grant from the W.M.Keck Foundation and matching funds from UC Irvine. The facility consists of three elements:<\/p>\n![\"Keck](\"https:\/\/sites.ps.uci.edu\/kccams\/wp-content\/uploads\/sites\/28\/2016\/12\/tank.jpg\")
<\/a>The accelerator terminal contains a high density recirculating gas stripper (2microgram\/sq cm of argon), with two turbo pumps for maintaining the best possible vacuum in the accelerator tube (see left). The accelerator tank is filled with high-pressure (80psi) SF6 for isolation of the high voltage terminal.<\/p>\n![\"Keck](\"https:\/\/sites.ps.uci.edu\/kccams\/wp-content\/uploads\/sites\/28\/2016\/12\/he_section_8.jpg\")
<\/a>The high energy analysis system consists of a 90\u00b0 double-focusing analyzing magnet and a 90\u00b0 electrostatic spherical analyzer, which perform an achromatic beam transport of the 14<\/sup>C particles to the detector. The effects of small beam energy variations on beam position cancel in the two elements, leaving the beam centered to the detector. A silicon solid state ionization (above right) detector at the end of the beam line measures particle energies to distinguish 14<\/sup>C from noise.<\/p>\n![\"Keck](\"https:\/\/sites.ps.uci.edu\/kccams\/wp-content\/uploads\/sites\/28\/2016\/12\/epsn0014_small.jpg\")
<\/a>The control and data acquisition systems supplied with the instrument are PC-based and use standard nuclear physics and laboratory automation hardware. The system is equipped with beam diagnostics (Faraday cups and beam scanners) to aid in tuning stable isotope beams. Final tuning is carried out by systematically varying critical power supplies to peak up the 14<\/sup>C count rate under computer control. In the unlikely event of malfunction or cooling system failure, the AMS system is programmed to shut down.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"