{"id":1013,"date":"2020-03-11T22:14:54","date_gmt":"2020-03-12T02:14:46","guid":{"rendered":"http:\/\/www.nuclearphysicslab.com\/npl\/?page_id=1013"},"modified":"2020-03-18T14:20:12","modified_gmt":"2020-03-18T18:20:12","slug":"12-inch-cyclotron","status":"publish","type":"page","link":"http:\/\/www.nuclearphysicslab.com\/npl\/npl-home\/accelerators\/cyclotrons\/12-inch-cyclotron\/","title":{"rendered":"12-Inch Cyclotron"},"content":{"rendered":"\n<p class=\"has-text-align-center\"><em>Author: Tim<\/em><\/p>\n\n\n\n<p>In the fall of 1995 Tim had the idea to build a cyclotron.  In September 1999 it achieved its first beam. In 2001 it was moved into the Modern Physics teaching lab at Rutgers University&#8217;s Physics department. In 2016 it was moved to a dedicated undergraduate accelerator teaching lab at the University of Maryland.<\/p>\n\n\n\n<p><br>Because the <a href=\"http:\/\/koethcyclotron.org\/\">12-Inch Cyclotron has its own website<\/a>, we will only give a brief overview of the machine.  This site will host the experiments performed with the cyclotron.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563.jpg\" alt=\"\" class=\"wp-image-1565\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4563-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>The cyclotron chamber removed from the magnet and opened for viewing while at Rutgers.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592.jpg\" alt=\"\" class=\"wp-image-1284\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_7592-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>Cyclotron in operation at Rutgers. Note phosphor screen target seen in the chamber window.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087.jpg\" alt=\"\" class=\"wp-image-1061\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8087-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>The 12-Inch Cyclotron chamber opened.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710.jpg\"><img loading=\"lazy\" width=\"4032\" height=\"3024\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710.jpg\" alt=\"\" class=\"wp-image-1084\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710.jpg 4032w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710-768x576.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710-1536x1152.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710-2048x1536.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7710-360x270.jpg 360w\" sizes=\"(max-width: 4032px) 100vw, 4032px\" \/><\/a><figcaption>The 12-Inch Cyclotron in operation at the University of Maryland, 2020.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-rotated.jpg\"><img loading=\"lazy\" width=\"3024\" height=\"4032\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-rotated.jpg\" alt=\"\" class=\"wp-image-1085\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-rotated.jpg 3024w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-1875x2500.jpg 1875w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-768x1024.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-1152x1536.jpg 1152w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-1536x2048.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7722-203x270.jpg 203w\" sizes=\"(max-width: 3024px) 100vw, 3024px\" \/><\/a><figcaption>The rear side of the 12-Inch Cyclotron showing the RF and vacuum systems.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-rotated.jpg\"><img loading=\"lazy\" width=\"3024\" height=\"4032\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-rotated.jpg\" alt=\"\" class=\"wp-image-1570\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-rotated.jpg 3024w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-1875x2500.jpg 1875w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-768x1024.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-1152x1536.jpg 1152w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-1536x2048.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7705-203x270.jpg 203w\" sizes=\"(max-width: 3024px) 100vw, 3024px\" \/><\/a><figcaption>Other view of the rear side, with the &#8220;RF box&#8221; in the foreground.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-rotated.jpg\"><img loading=\"lazy\" width=\"3024\" height=\"4032\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-rotated.jpg\" alt=\"\" class=\"wp-image-1571\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-rotated.jpg 3024w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-1875x2500.jpg 1875w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-768x1024.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-1152x1536.jpg 1152w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-1536x2048.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7752-203x270.jpg 203w\" sizes=\"(max-width: 3024px) 100vw, 3024px\" \/><\/a><figcaption>Take the lid off and look inside the RF box.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741.jpg\" alt=\"\" class=\"wp-image-1573\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5741-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>The 12-Inch Cyclotron chamber open on the bench for ion source rebuild.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/pig3.jpg\"><img loading=\"lazy\" width=\"720\" height=\"960\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/pig3.jpg\" alt=\"\" class=\"wp-image-1087\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/pig3.jpg 720w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/pig3-203x270.jpg 203w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/a><figcaption>PIG Ion source disassembly.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25.jpg\" alt=\"\" class=\"wp-image-1067\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/PIG_25-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>PIG Ion Source components disassembled and cleaned for rebuild.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/ion_source_on.png\"><img loading=\"lazy\" width=\"1098\" height=\"1209\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/ion_source_on.png\" alt=\"\" class=\"wp-image-1064\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/ion_source_on.png 1098w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/ion_source_on-768x846.png 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/ion_source_on-245x270.png 245w\" sizes=\"(max-width: 1098px) 100vw, 1098px\" \/><\/a><figcaption>12-Inch Cyclotron&#8217;s PIG Ion Source reinstalled and in operation.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429.jpg\"><img loading=\"lazy\" width=\"4032\" height=\"3024\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429.jpg\" alt=\"\" class=\"wp-image-1572\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429.jpg 4032w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429-768x576.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429-1536x1152.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429-2048x1536.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_8429-360x270.jpg 360w\" sizes=\"(max-width: 4032px) 100vw, 4032px\" \/><\/a><figcaption>Typical view through the rectangular port during normal operation.  One can see the purple glow surrounding the ion source in the center of the chamber, and the bright green vertical beam spot on the phosphor screen inserted about one half the way in from the maximum ion source radius of 5 inches.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950.jpg\" alt=\"\" class=\"wp-image-1564\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5950-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>If the chamber pressure is high enough (really too high for useful operation) the plane of the circulating beam can be visually observed.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381.jpg\" alt=\"\" class=\"wp-image-1089\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_0381-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>12-Inch Cyclotron&#8217;s deflector assembly on the bench, phosphor target to the right.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091.jpg\"><img loading=\"lazy\" width=\"4032\" height=\"3024\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091.jpg\" alt=\"\" class=\"wp-image-1569\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091.jpg 4032w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091-768x576.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091-1536x1152.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091-2048x1536.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_1091-360x270.jpg 360w\" sizes=\"(max-width: 4032px) 100vw, 4032px\" \/><\/a><figcaption>Same view of the deflector channel, but with it installed in the cyclotron chamber. An intense beam spot can be seen making it to the end of the deflection channel.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763.jpg\" alt=\"\" class=\"wp-image-1070\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_6763-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>Close-up view of the phosphor target, viewing two spots of the partial nth and all nth+1 turns.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-rotated.jpg\"><img loading=\"lazy\" width=\"3024\" height=\"3024\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-rotated.jpg\" alt=\"\" class=\"wp-image-1205\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-rotated.jpg 3024w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-500x500.jpg 500w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-768x768.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-1536x1536.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-2048x2048.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7749-270x270.jpg 270w\" sizes=\"(max-width: 3024px) 100vw, 3024px\" \/><\/a><figcaption>Another closeup, but seeing the effect of an aperture plate installed just before the deflector.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886.jpg\" alt=\"\" class=\"wp-image-1563\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_5886-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>Deflection channel after a long run showing beam burn-in on phosphor screen.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557.jpg\" alt=\"\" class=\"wp-image-1068\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_4557-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>The collection of pole tips, upper left: good WF pole tips, bottom left: bad WF pole tips, top right: AKG270 AVF spiral pole tips, and bottom right: radial sectored AVF pole tips.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862.jpg\" alt=\"\" class=\"wp-image-1062\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TWK_8862-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>Axial betatron motion imaged.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803.jpg\"><img loading=\"lazy\" width=\"2128\" height=\"1416\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803.jpg\" alt=\"\" class=\"wp-image-1063\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803.jpg 2128w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/TIM_7803-406x270.jpg 406w\" sizes=\"(max-width: 2128px) 100vw, 2128px\" \/><\/a><figcaption>Betatron motion with bad WF pole tips showing Walkinshaw resonance blow up on the right.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-rotated.jpg\"><img loading=\"lazy\" width=\"3024\" height=\"4032\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-rotated.jpg\" alt=\"\" class=\"wp-image-1574\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-rotated.jpg 3024w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-1875x2500.jpg 1875w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-768x1024.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-1152x1536.jpg 1152w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-1536x2048.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7783-203x270.jpg 203w\" sizes=\"(max-width: 3024px) 100vw, 3024px\" \/><\/a><figcaption>Control console of the 12-Inch Cyclotron.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786.jpg\"><img loading=\"lazy\" width=\"4032\" height=\"3024\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786.jpg\" alt=\"\" class=\"wp-image-1575\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786.jpg 4032w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786-768x576.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786-1536x1152.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786-2048x1536.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/IMG_7786-360x270.jpg 360w\" sizes=\"(max-width: 4032px) 100vw, 4032px\" \/><\/a><figcaption>Example of one of the 12-Inch Cyclotron&#8217;s PLC touch-screen displays.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class.jpg\"><img loading=\"lazy\" width=\"4256\" height=\"2832\" src=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class.jpg\" alt=\"\" class=\"wp-image-1071\" srcset=\"http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class.jpg 4256w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class-768x511.jpg 768w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class-1536x1022.jpg 1536w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class-2048x1363.jpg 2048w, http:\/\/www.nuclearphysicslab.com\/npl\/wp-content\/uploads\/USPAS_2015_Cyclotrons_class-406x270.jpg 406w\" sizes=\"(max-width: 4256px) 100vw, 4256px\" \/><\/a><figcaption>Two-week cyclotron class at USPAS during 2015 summer session. <\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-embed-vimeo wp-block-embed is-type-video is-provider-vimeo wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"TWK_7641.AVI\" src=\"https:\/\/player.vimeo.com\/video\/397870694?dnt=1&amp;app_id=122963\" width=\"640\" height=\"360\" frameborder=\"0\" allow=\"autoplay; fullscreen\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Rutgers 12&quot; Cyclotron\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/G2N-k5jz8bs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><figcaption>A tour of the 12-Inch Cyclotron&#8217;s components, subsystems, and operations.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Author: Tim In the fall of 1995 Tim had the idea to build a cyclotron. In September 1999 it achieved its first beam. In 2001 it was moved into the Modern Physics teaching lab at Rutgers University&#8217;s Physics department. In 2016 it was moved to a dedicated undergraduate accelerator teaching lab at the University&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"http:\/\/www.nuclearphysicslab.com\/npl\/npl-home\/accelerators\/cyclotrons\/12-inch-cyclotron\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":1061,"parent":145,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"advanced-sidebar-menu\/link-title":"","advanced-sidebar-menu\/exclude-page":false},"categories":[50,10,11,37],"tags":[],"_links":{"self":[{"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/pages\/1013"}],"collection":[{"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/comments?post=1013"}],"version-history":[{"count":13,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/pages\/1013\/revisions"}],"predecessor-version":[{"id":2126,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/pages\/1013\/revisions\/2126"}],"up":[{"embeddable":true,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/pages\/145"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/media\/1061"}],"wp:attachment":[{"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/media?parent=1013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/categories?post=1013"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.nuclearphysicslab.com\/npl\/wp-json\/wp\/v2\/tags?post=1013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}