Scintillation Crystal
(Sub Surface Laser Engraving)
Ma scintillation-based detectors, pogwiritsa ntchito ma pixelated inorganic crystal scintillators, ndiamagwiritsidwa ntchito kwambiri pozindikira ma particle ndi ma radiation, kuphatikizapo mupositron emission tomography (PET) scanner.
Powonjezera zowongolera zowunikira ku kristalo, mawonekedwe a malo a chowunikiraikhoza kusinthidwa kukhala sikelo ya millimeter, kupititsa patsogolo chiganizo chonse cha tomograph.
Komabe, njira yachikhalidwe yakuthupi pixelatingmakristasi ndi anjira zovuta, zodula, komanso zovuta. Kuphatikiza apo, kagawo kakang'ono konyamula ndi kukhudzidwa kwa detectorakhoza kusokonezedwachifukwa chazinthu zosasunthika zowunikira zomwe zimagwiritsidwa ntchito.
Mutha kuwona Pepala Loyambirira Lofufuza Pano. (Kuchokera ku ResearchGate)
Subsurface Laser Engraving kwaScintillation Crystal
Njira ina ndiyo kugwiritsa ntchitonjira za subsurface laser engraving (SSLE).kwa makristalo a scintillator.
Poyang'ana laser mkati mwa kristalo, kutentha kumapangaakhoza kupanga dongosolo lolamulidwa la microcrackskutichitani ngati zowunikira, kupanga bwinoma pixel owongolera kuwalapopanda kufunika kwa kulekana mwakuthupi.
1. Palibe pixelation yakuthupi ya kristalo yomwe imafunikira,kuchepetsa zovuta ndi mtengo.
2. Mawonekedwe a kuwala ndi geometry ya mapangidwe owonetsera angakhalekulamulidwa ndendende, kupangitsa mapangidwe amitundu yama pixel ndi makulidwe ake.
3. Kuwerenga ndi detector zomangamangazikhale zofanana ndi zofananira za pixelated.
Laser Engraving Process (SSLE) ya Scintillator Crystal
Kujambula kwa SSLE kumaphatikizaponjira zotsatirazi:
1. Kapangidwe:
Simulation ndi mapangidwe aZomangamanga za pixel zomwe mukufuna, kuphatikizapomiyesondimawonekedwe a kuwala.
2. Chitsanzo cha CAD:
Kulengedwa kwa amwatsatanetsatane CAD chitsanzokugawa kwa microcrack,kutengera zotsatira zoyesererandilaser chosema specifications.
3. Yambani Kujambula:
Zolemba zenizeni za LYSO crystal pogwiritsa ntchito makina a laser,motsogozedwa ndi chitsanzo cha CAD.
Ndondomeko Yachitukuko cha SSLE: (A) Chitsanzo Choyerekeza, (B) Chitsanzo cha CAD, (C) Chojambula LYSO, (D) Chithunzi cha Chigumula cha M'munda
4. Kuunika kwa Zotsatira:
Kuwunika kwa magwiridwe antchito a kristalo pogwiritsa ntchito achithunzi cha kusefukira kwa madzindiKukonzekera kwa Gaussiankuti muwunikire mtundu wa pixel ndi kusintha kwa malo.
Subsurface Laser Engraving KUFOTOKOZEDWA mu 2 Mphindi
Thesubsurface laser engraving njirakwa makhiristo a scintillator amapereka anjira yosinthiraku pixelation ya zinthu izi.
Popereka chiwongolero cholondola pamawonekedwe a kuwala ndi geometry yazinthu zowunikira, njira iyiimathandizira kupanga mapangidwe apamwamba a detectorndikukhathamiritsa kwa malo ndi magwiridwe antchito, zonsepopandakufunikira kwa pixelation yovuta komanso yokwera mtengo.
Mukufuna Kudziwa Zambiri za:
Subsurface Laser Engraving Scintillation Crystal?
Zotsatira za SSLE Scintillation Crystal
1. Kutulutsa Kwabwino Kowala
Kumanzere: Zojambulidwa Pamwamba Pamwamba Zowoneka Asymmetry DoI mwachidule.
Kumanja: Pixel Displacement DoI.
Kuyerekeza kwa ma pulses pakatisubsurface laser engraved (SSLE) arraysndimagulu ochiritsirakusonyeza azokolola zabwino kwambiri za SSLE.
Izi mwina ndi chifukwa chakusowa kwa zowonetsera pulasitikipakati pa ma pixel, omwe angayambitse kusagwirizana kwa kuwala ndi kutayika kwa photon.
The bwino kuwala zokolola zikutanthauzakuwala kochuluka kwa ma pulses amphamvu omwewo, kupanga SSLE khalidwe lofunika.
2. Khalidwe Lowonjezera Nthawi
Chithunzi cha Scintillation Crystal
Utali wa kristalo uli ndi akuwononga nthawi, zomwe ndizofunikira pamapulogalamu a Positron Emission Tomography (PET).
Komabe, akukhudzika kwakukulu kwa makristalo a SSLEamalola kugwiritsa ntchitomakhiristo amfupi, zomwe zingatheonjezerani kachitidwe ka nthawi ya dongosolo.
Mafanizidwe awonetsanso kuti mawonekedwe osiyanasiyana a pixel, monga hexagonal kapena dodecagonal, akhozakumabweretsa kuwongolera bwino kwa kuwala ndi nthawi, zofanana ndi mfundo za ulusi wa kuwala.
3. Ubwino Wopanda Mtengo
Chithunzi cha Scintillator Crystal
Poyerekeza ndi midadada monolithic, mtengo wa makhiristo SSLEakhoza kukhala otsika ngatigawo limodzi mwamagawo atatuza mtengoza gulu lofananira la pixelated, kutengera miyeso ya pixel.
Kuphatikiza apo, thekukhudzika kwakukulu kwa makristalo a SSLEamalola kwakugwiritsa ntchito makristasi amfupi, kuchepetsanso mtengo wonse.
Njira ya SSLE imafuna mphamvu yochepa ya laser poyerekeza ndi kudula kwa laser, kulolamachitidwe otsika mtengo a SSLEpoyerekeza ndi laser kusungunuka kapena kudula malo.
Thendalama zoyamba muzomangamanga ndi maphunzirochifukwa SSLE ndi yotsika kwambirikuposa mtengo wopangira chowunikira cha PET.
4. Kupanga Kusinthasintha ndi Kusintha Mwamakonda Anu
Njira yojambula makhiristo a SSLE ndiosawononga nthawi, ndi pafupifupiMphindi 15zofunika kulemba 12.8x12.8x12 mm, 3-crystal array.
Thekusinthasintha chikhalidwe, kusungitsa ndalama,ndimosavuta kukonzekera makhiristo a SSLE, pamodzi ndi iwokagawo kakang'ono kwambiri, kubwezerakutsika pang'ono kwa malopoyerekeza ndi mitundu yokhazikika ya pixelated.
Ma geometries a Pixel Osakhala Achizolowezi
SSLE imalola kufufuza kwamawonekedwe a pixel osakhala achizolowezi, kupangitsa ma scintillating ma pixel kukhalazimagwirizana ndendende ndi zofunikira za pulogalamu iliyonse, monga ma collimators kapena kukula kwa ma silicon photomultiplier pixels.
Kugawana Kuwala Kwambiri
Kugawana kuwala kolamuliridwa kumatha kutheka kudzera mukusintha bwino mawonekedwe a mawonekedwe ojambulidwa,kuthandizira kuwonjezereka kwina kwa ma gamma detectors.
Zojambula Zachilendo
Zojambula zachilendo, monga Voronoi tessellations, akhoza kukhalazojambulidwa mosavuta mkati mwa makhiristo a monolithic. Kuphatikiza apo, kugawa kwachisawawa kwa kukula kwa pixel kumatha kuyambitsa njira zolumikizirana, kugwiritsa ntchito mwayi wogawana kwambiri.
Makina a Subsurface Laser Engraving
Mtima wa chilengedwe cha Subsurface Laser uli mu makina ojambula a laser. Makina awa amagwiritsidwa ntchitolaser wobiriwira wamphamvu kwambiri, yopangidwira makamakasubsurface laser chosema mu kristalo.
TheOne & Only Solutionmudzafunikanso Subsurface Laser Engraving.
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Kwa Subsurface Laser Engraving,kulondola ndikofunikirapopanga zojambula zatsatanetsatane komanso zovuta. Chingwe cholunjika cha laserndendende zimagwirizanandi kapangidwe ka mkati mwa kristalo,kupanga chithunzi cha 3D.
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