{"id":561,"date":"2018-06-15T12:48:43","date_gmt":"2018-06-15T11:48:43","guid":{"rendered":"http:\/\/www.essbilbao.org\/?page_id=561"},"modified":"2021-11-25T12:51:18","modified_gmt":"2021-11-25T11:51:18","slug":"proton-beam-window","status":"publish","type":"page","link":"https:\/\/www.essbilbao.org\/es\/in-kind-contribution\/target\/proton-beam-window\/","title":{"rendered":"Proton Beam Window"},"content":{"rendered":"

[vc_row full_width=\u00bbstretch_row\u00bb content_placement=\u00bbmiddle\u00bb parallax=\u00bbcontent-moving\u00bb css_animation=\u00bbfadeIn\u00bb css=\u00bb.vc_custom_1528279765751{background-color: rgba(255,255,255,0.21) !important;*background-color: rgb(255,255,255) !important;}\u00bb][vc_column]

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Proton Beam Window <\/h1><\/div>\n[vc_row_inner][vc_column_inner width=\u00bb5\/12″]
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Target<\/span><\/h3>

Proton Beam Window<\/p>

<\/i><\/p><\/div><\/div><\/div><\/a><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=\u00bb7\/12″ css=\u00bb.vc_custom_1531228729012{padding-top: 60px !important;}\u00bb][vc_column_text]The PBW (Proton Beam Window) is the device in charge to separate the ultra-high vacuum atmosphere of the accelerator, to the rough vacuum atmosphere present at target side. A thorough design permits a 5MW proton beam to cross two thin plates of less than 1.25mm without suffering more than 1% of scattering (perturbation of beam features).[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text]Nuclear calculations have been applied to study the material, its lifetime and property changes, and to obtain volumetric heat sources. Combined CFD and FEM analyses have been used to design an efficient cooling system, studying from the boundary layer effects, up to the design of a mechanical shape capable to support a nominal 5 bar absolute pressure within the slim plates, and maximum of 12.5 bar.\u00a0<\/span><\/p>\n

Manufacturing design has been performed; and milling, EDM and WEDM, have turned the already finished first prototype a great success, avoiding hazardous welds and preserving Al6061 properties in the whole bulk.\u00a0<\/span><\/p>\n

A remote operated seal prototype is currently under manufacturing\u00a0design,\u00a0and\u00a0will enable to close both atmospheres by means of a pneumatic system. A helical design in steel shielding blocks will be used to avoid high levels of radiation leakages (streaming), while providing a stable solution to a restrictive envisaged vertical assembling process and gravity loads.\u00a0<\/span>[\/vc_column_text][vc_row_inner][vc_column_inner width=\u00bb1\/3″]

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Mechanical Analyses<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=\u00bb1\/3″]
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Mechanical Analyses<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=\u00bb1\/3″]
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Mechanical Analyses<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row css=\u00bb.vc_custom_1531475578314{margin-top: 10px !important;margin-bottom: 0px !important;border-top-width: 30px !important;padding-top: 20px !important;padding-bottom: 0px !important;}\u00bb][vc_column css=\u00bb.vc_custom_1531475496898{margin-bottom: 0px !important;padding-bottom: 0px !important;}\u00bb][vc_row_inner][vc_column_inner width=\u00bb1\/12″ css=\u00bb.vc_custom_1531475534014{margin-bottom: 0px !important;padding-bottom: 0px !important;}\u00bb][vc_single_image image=\u00bb1613″ img_size=\u00bb30×30″ css=\u00bb.vc_custom_1531238699041{margin-bottom: 0px !important;border-bottom-width: 0px !important;padding-bottom: 0px !important;}\u00bb][\/vc_column_inner][vc_column_inner width=\u00bb11\/12″ css=\u00bb.vc_custom_1531475517101{margin-bottom: 0px !important;border-bottom-width: 0px !important;padding-top: 5px !important;padding-bottom: 0px !important;}\u00bb][vc_custom_heading text=\u00bbPrototiping and Testing\u00bb font_container=\u00bbtag:h3|font_size:25|text_align:left\u00bb use_theme_fonts=\u00bbyes\u00bb css=\u00bb.vc_custom_1539159306587{margin-bottom: 0px !important;padding-bottom: 0px !important;}\u00bb][\/vc_column_inner][\/vc_row_inner][vc_column_text]The\u00a0high power deposited by the beam requires\u00a0the use of\u00a0thin volumes together with\u00a0an\u00a0aggressive\u00a0cooling system.\u00a0Ultimate\u00a0manufacturing techniques\u00a0are employed to solve such challenging\u00a0designs,\u00a0and the need\u00a0of prototyping\u00a0to learn from the process\u00a0comes\u00a0out.\u00a0\u00a0<\/span><\/p>\n

There have been prototyped 4 models for the PBW, testing from the\u00a0impurities in the material, the manufacturing repeatability, to the mechanical resistance by carrying out hydrostatic tests.\u00a0<\/span><\/p>\n

A 2.00 mm channel serves the 5 bar pressure coolant to remove\u00a0the around 4kW deposited in the PBW,\u00a0where 2 thin walls of 1.25mm comprises both sides of the structural part, forming a\u00a0sandwich<\/i>\u00a0structure that we have found to be the most efficient from the thermal\u00a0and mechanical points of view.\u00a0\u00a0<\/span>[\/vc_column_text][vc_row_inner][vc_column_inner width=\u00bb1\/3″]

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Manufactured prototypes<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=\u00bb1\/3″]
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LPI, Ultrasonic and hydrostatic tests<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=\u00bb1\/3″]
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LPI, Ultrasonic and hydrostatic tests<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][\/vc_row_inner][vc_column_text]High radiation environment forces to perform completely remote handling operations. Sealing the region that\u00a0enfolds the PBW is one of the most difficult challenges.\u00a0A\u00a0prototype\u00a0for the seal has been manufactured, and\u00a0a full testing\u00a0sequence\u00a0has been designed to investigate all possible situations in the final\u00a0facility at Lund.\u00a0\u00a0<\/span><\/p>\n

Remote handling design will permit us to insert and close the seal with no human interaction, avoiding the hazardous radioactive atmosphere, and guaranteeing precision of movement and positioning under 0.5 mm; all under full design at ESS Bilbao.[\/vc_column_text][vc_row_inner][vc_column_inner width=\u00bb1\/2″]

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Remote handling seal prototype<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=\u00bb1\/2″]
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Remote handling seal prototype<\/h4><\/div><\/div><\/div><\/div>[\/vc_column_inner][\/vc_row_inner][vc_column_text]<\/p>\n

Different companies are already involved\u00a0<\/span><\/span>during the design, manufacturing and testing\u00a0<\/span><\/span>tasks<\/span><\/span>, providing\u00a0<\/span><\/span>an excellent feedback that will\u00a0<\/span><\/span>support the\u00a0<\/span><\/span>final contribution to this project.\u00a0<\/span><\/span>\u00a0<\/span><\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row full_width=\u00bbstretch_row\u00bb content_placement=\u00bbmiddle\u00bb parallax=\u00bbcontent-moving\u00bb css_animation=\u00bbfadeIn\u00bb css=\u00bb.vc_custom_1528279765751{background-color: rgba(255,255,255,0.21) !important;*background-color: rgb(255,255,255) !important;}\u00bb][vc_column][vc_row_inner][vc_column_inner width=\u00bb5\/12″][\/vc_column_inner][vc_column_inner width=\u00bb7\/12″ css=\u00bb.vc_custom_1531228729012{padding-top: 60px !important;}\u00bb][vc_column_text]The PBW (Proton Beam Window) is the device in charge to separate [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":173,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-561","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/pages\/561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/comments?post=561"}],"version-history":[{"count":1,"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/pages\/561\/revisions"}],"predecessor-version":[{"id":11826,"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/pages\/561\/revisions\/11826"}],"up":[{"embeddable":true,"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/pages\/173"}],"wp:attachment":[{"href":"https:\/\/www.essbilbao.org\/es\/wp-json\/wp\/v2\/media?parent=561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}