Single PET-module Design Update 1 TRIMAGE Meeting Munich, Dec. 12,2014 WP 3 Design and optimization of PET-system Andreas Seebacher, raytest

Single PET-module Design Update 2

3 Cassette design: Two solutions to be developed -Solution1:Fully 3D-printed plastics to be painted with copper paint (first solution to be tested, design already started) -Solution 2: 3D printed holder + carbon tube around (more advanced alternative) Decisions of the Pisa WP3 meeting:

Single PET-module Design Update 4 Solution1a/b: Fully 3D-printed plastics to be painted with copper paint -Closed 3D-printed Positioning Plate -3 mm Glasfiberplate as module support -U-shaped FPGA-board -Al-radiators on each ASIC -Aircooling from above -Overall length: 313 mm (Solution 1a) or 363 mm ( Solution 1b ) Both solutions can be adapted into Solution 2 by changing the shielding material from plastics to carbon fiber. All other parts remain the same as in solution 1a/b Solution 1a Solution 1b

Single PET-module Design Update 5 Main components

Single PET-module Design Update 6 Components of the Single PET-modul: Positioning Plate -3D-printed -PA2200 -Material coloured black -Copper paint at bottom side -Overall tolerances min. +/- 0,1 mm

Single PET-module Design Update 7 PET-module BackplateBackplate -Material: POM -Provides stability to the module

Single PET-module Design Update 8 Isolator Plate -Made from POM -Bores for cooling hoses and cables -Positioning pins for assembly Isolator Plate Material: POM

Single PET-module Design Update 9 Universal End Plate - slide rails for accurate positioning -bores for cooling hoses and cabeling -Made from POM

Single PET-module Design Update 10 The Glasfiber Plate: -Additional stability for the Single PET module -Airchamber screwed to it -Connects the two Backplates

Single PET-module Design Update 11 Crystal matrix Delivery of crystal matrix has to be decided ( seperate arrays or glued) Optical shielding 100 mikron thick

Single PET-module Design Update 12

Single PET-module Design Update 13

Single PET-module Design Update 14

Single PET-module Design Update 15 SiPM with ASIC`s Gap 120 mikrons for opt. shielding

Single PET-module Design Update 17 Board with FPGA - U-shaped

Single PET-module Design Update 18 Pin radiator (Aluminium) Data: Bottom thickness: 2 mm Dimensions: 14 mm x 14 mm Height: 6 mm Capacity: 0,8 W Minimum thermal resistance:72,5 K/W Material: Al99,5

Single PET-module Design Update 19 Air cooling of the ASIC`s - mounted above the pin radiators -provides aircooling -Air will be led away on backside of module

Single PET-module Design Update 20 Detector Shielding -Made from plastic or carbon fiber -Surfaces painted with copper paint

Single PET-module Design Update 21 PET-Ring - 18 modules arranged in a circle -Pet-ring mounted within magnet -All suplies from backside of the ring -Weight: ca. 45+ kg

Single PET-module Design Update 22 Distance of 2 Crystal stacks between two modules

Single PET-module Design Update 23

Single PET-module Design Update 24 What do we need? What decisions need to be made! -CAD-model or Spec of magnet and RF-Coil -Attachment points to mount Pet-ring to magnet -Specification of the patients table -Delivery of crystal matrix has to be decided ( seperate arrays or glued) -Glueing procedure crystal/SiPM -Air or water cooling? -Module shielding made from carbon or painted plastic -Tolerance +/- 0,1 mm acceptable for rapid prototyping parts? -Testing of mechanical components in magnetic field -Intergration of head coil on Patients table -Integration of EEG

Single PET-module Design Update 25

Single PET-module Design Update 26

Single PET-module Design Update 27