ELogs/MechanicalEngineering

Electronic Log for Mechanical Engineering

To Do

Proton Therapy

Medium-sized Peli case

• Due date: 20th October
• Currently in Simon's office next to radiator.

1. Install Thorlabs optical breadboard in base of case.
2. Cut out window at each end of case for mylar window installation.
   • Max width 20cm.
   • Bottom of window level with optical breadboard.
   • Top of window flush with handle support struts.
3. Cut out 2 windows for 2-gang patch panels, 1 per side.
4. Cut out 2 windows for 1-gang patch panels, 1 per end.
5. 3D print internal frames for mylar windows with bolt holes in each corner. Drill bolt holes in Peli case.
6. 3D print external frame with alignment marks matching centre line of optical breadboard (vertical) and 71mm above optical breadboard (horizontal). Match bolt holes to mylar window frames.
7. 3D print alignment plates that are strong enough to double as external cover plates when shipping enclosure.

Small Peli case

• Due date: 20th October

1. 3D print external frame with alignment marks matching centre line of optical breadboard (vertical) and 71mm above optical breadboard (horizontal). Match bolt holes to mylar window frames.
2. 3D print alignment plates that are strong enough to double as external cover plates when shipping enclosure.

• Due date: 30th November

1. Duplicate alignment bar from Zarges case with circular studs to allow alignment with treatment couch.

Clatterbridge detector

• Design enclosure for small-scale Clatterbridge prototype (with Simon).
• Internal volume approx 15 x 15 x 15cm.
• Needs to contain 16-sheet scintillator stack and FPGA with patch panel for FPGA and power connections.
• Raspberry Pi mounted externally.
• Light enough to mount directly to Clatterbridge nozzle; double sided so mountable from both directions. Whole structure hangs off nozzle.

Full detector scintillator holder

• We need to go from the prototype version bolted to the optical plate to something completely standalone.
• We can probably put it in another Peli case — I have loads — initially with an optical breadboard but eventually without.
• It needs a support structure that is not rigidly bolted to the case but will align to any windows we cut: that means clinical staff can whack the detector and it won’t break or go out of alignment. So something internally sprung.

Completed

2022

September

Machine a patch panel complete with 10 smaller panels that can be swapped between on the main patch panel to allow for various electrical feedthroughs

August

Created CAD cross hair for Peli Case to be printed. Also created small printed windows to clamp Mylar smooth over the beam entry point.

July

Created CAD models for internal components including:

• Scintillator holder.
• 2x Side Vice faces.
• 1x Front Vice face.
• Cover for beam entry point.

These were printed soon after.

Beam entry point was cut out of the case, piece was sent for testing with Adam Gibson.

Machined two special 1/4-20 UNC screws for camera mount.

Tapped all holes on Scintillator holder to take m5 nylon screws to allow vice faces to travel.

June

Initiated design of large Peli Case. Received Lab scissor jack used to mount camera.

May

CAD Prototype a sliding system to mount multiple scintillator holders into a case

February

Create CAD model for small Peli Case so ideas on how to install the holder into the case can be prototyped

2021

November

Design initial prototype of a new holder that will clamp scintillator sheets together. Will supersede previous adhesive idea

June

Prepare scintillator sheets to be adhered together using standard primer