Radiotherapy/Experimental Runs/2022-07-26
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Second run
End of range telescope tests.
Second experimental measurements with Cyberknife at Birmingham. Green scintillator thin sheet measurements only.
Schematic
Data Taking
All images taken with Nikon D7000, 20mm lens, f/2.8, 400ISO
First run
Collimator Size (mm) | Exposure (s) | Image | Comments |
---|---|---|---|
5 | 30 | ||
7.5 | 20 | ||
10 | 15 | ||
12.5 | 10 | ||
15 | 8 | ||
20 | 8 | ||
25 | 6 | ||
30 | 6 | ||
35 | 5 | ||
40 | 4 | ||
50 | 3 | ||
60 | 3 |
Collimator Size (mm) | Exposure (s) | Image | Comments |
---|---|---|---|
5 | 30 |
Second run
Collimator Size (mm) | Exposure (s) | Image | Comments |
---|---|---|---|
5 | 30 | ||
7.5 | 20 | ||
10 | 15 | ||
12.5 | 10 | ||
15 | 8 | ||
20 | 8 | ||
25 | 6 | ||
30 | 6 | ||
35 | 5 | ||
40 | 4 | ||
50 | 3 | ||
60 | 3 |
Collimator Size (mm) | Exposure (s) | Image | Comments |
---|---|---|---|
5 | 30 | ||
7.5 | 20 | ||
10 | 15 | ||
12.5 | 10 | ||
15 | 8 | ||
20 | 8 | ||
25 | 6 | ||
30 | 6 | ||
35 | 5 | ||
40 | 4 | ||
50 | 3 | ||
60 | 3 |
Experiment Plan
Rev. B Prototype
- Background & calibration shoot-throughs (background at all 8 DDC232 full-scale ranges – likely 12.5 pC is most appropriate FSR)
- Pencil beams, 70-130 MeV, 10 MeV steps, in both directions into stack. For direction with Bragg peak in clear sheets, test 2 currents (high/low)
Rev. C Prototype
- Background & calibration shoot-throughs (12.5 pC FSR)
- Pencil beams, 70-110 MeV, 5 MeV steps, at clinical current.
Experiment Notes
Range calorimeter measurements with CMOS sensor + photodiodes.
Images from Sensor: /unix/www/html/pbt/wikiData/images/UCLH_Jun2022/CMOS
Photodiode hexadecimal data: /unix/pbt/data/uclh/20220616/DDC232
Run number | Beam Energy (MeV) | Estimated Range (mm) | Current (nA) | Spot size (mm, FWHM) | DDC232 FSR (pC) | DDC232 Integration Time (us) | Degrader WET (mm) | Comments | Photodiode QB Fit | CMOS QB Fit | PDL Comparison | Replay Fit |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | Background | N/A | N/A | N/A | 350 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
1 | Background | N/A | N/A | N/A | 300 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
2 | Background | N/A | N/A | N/A | 250 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
3 | Background | N/A | N/A | N/A | 200 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
4 | Background | N/A | N/A | N/A | 150 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
5 | Background | N/A | N/A | N/A | 100 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
6 | Background | N/A | N/A | N/A | 50 | 170 | 0 | room light off | N/A | N/A | N/A | N/A |
7 | Background | N/A | N/A | N/A | 12.5 | 170 | 0 | room light off (continued) | N/A | N/A | N/A | N/A |
8 | 240 | N/A | 10 | N/A | 350 | 170 | 50 | LH shoot through; 270° gantry; CMOS sensor saturated | N/A | N/A | N/A | N/A |
9 | 240 | N/A | 10 | N/A | 12.5 | 170 | 50 | LH shoot through; 270° gantry; CMOS sensor saturated | N/A | N/A | N/A | N/A |
10 | 240 | N/A | 10 | N/A | 12.5 | 170 | 50 | RH shoot through; 90° gantry; CMOS sensor saturated | N/A | N/A | N/A | N/A |
11 | 200 | N/A | 90 | N/A | 12.5 | 170 | 50 | RH shoot through; 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
12 | 200 | N/A | 20 | N/A | 12.5 | 170 | 50 | RH shoot through; 90° gantry; CMOS sensor fine; | N/A | N/A | N/A | N/A |
13 | 130 | N/A | 50 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor slight saturation; | N/A | N/A | N/A | N/A |
14 | 120 | N/A | 60 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
15 | 120 | N/A | 270 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
16 | 110 | N/A | 70 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
17 | 110 | N/A | 300 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
18 | 100 | N/A | 90 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
19 | 100 | N/A | 350 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
20 | 90 | N/A | 110 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor fine; | N/A | N/A | N/A | N/A |
21 | 90 | N/A | 400 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor fine; | N/A | N/A | N/A | N/A |
22 | 80 | N/A | 500 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor fine; | N/A | N/A | N/A | N/A |
23 | 70 | N/A | 700 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor fine; | N/A | N/A | N/A | N/A |
24 | 130 | N/A | 200 | N/A | 12.5 | 170 | 0 | 90° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
25 | 200 | N/A | 20 | N/A | 12.5 | 170 | 50 | LH shoot through; 270° gantry; CMOS sensor fine; | N/A | N/A | N/A | N/A |
26 | 130 | N/A | 200 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
27 | 120 | N/A | 270 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
28 | 110 | N/A | 300 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
29 | 100 | N/A | 350 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
30 | 90 | N/A | 400 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
31 | 80 | N/A | 500 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
32 | 70 | N/A | 700 | N/A | 12.5 | 170 | 0 | 270° gantry; CMOS sensor saturated; | N/A | N/A | N/A | N/A |
33 | background | N/A | N/A | N/A | 12.5 | 170 | 0 | RevC onwards; 270° gantry | N/A | N/A | N/A | N/A |
34 | 240 | N/A | 13 | N/A | 12.5 | 170 | 50 | LH shoot through; 270° gantry | N/A | N/A | N/A | N/A |
35 | 240 | N/A | 13 | N/A | 12.5 | 170 | 50 | RH shoot through; 90° gantry | N/A | N/A | N/A | N/A |
36 | 110 | N/A | 300 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
37 | 105 | N/A | 350 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
38 | 100 | N/A | 350 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
39 | 95 | N/A | 400 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
40 | 90 | N/A | 400 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
41 | 85 | N/A | 500 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
42 | 80 | N/A | 500 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
43 | 75 | N/A | 700 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |
44 | 70 | N/A | 700 | N/A | 12.5 | 170 | 0 | 90° gantry; | N/A | N/A | N/A | N/A |