Radiotherapy/Experimental Runs/2022-09-07

Third experimental measurements with Cyberknife at Birmingham. Green and blue scintillator thin sheet measurements with measurements of green radiation damage.

Setup

Camera settings

• Focal length 20mm
• lens focus distance – 0.5 (500mm)
• 53cm focal plane (phi on camera ) to sheet
• f-number 5.6

Plan

• Take photos of green sheet with blocks1 starting from big field size to small
• Take photo of discolouration
• Take out blocks1 and photo with colorchecker
• Put in blocks2 and blue enhanced scint sheet – repeat
• Remove blue sheet – repeat measurements
• Photo blocks1 and colorchecker again

Data taking

Blue scintillator sheet
Collimator Size (mm)	Exposure (s)	ISO	f-number	File no.	Comments	Image
60	10	400	5.6	69-73
50	10	400	5.6	74-78
40	13	400	5.6	79-83
35	15	400	5.6	84-88
30	15	400	5.6	89-93
25	20	400	5.6	94-98
20	25	400	5.6	99,101-104
15	30	400	5.6	106-110
12.5	30	400	5.6	111-115
10	30	400	5.6	116-120
7.5	30	400	5.6	121-130
5	30	400	5.6	131-140
5	30	800	5.6	141-145
5	30	1600	5.6	146-150
5	30	400	2.8	151-155
5	15	1600	5.6	156-160
60	4	400	5.6	161-165
60	5	400	5.6	166-170
60	6	400	5.6	171-175

With scintillator blue sheet
Collimator Size (mm)	Exposure (s)	ISO	f-number	File name	Image	Comments
5	30	400	5.6	hello	im	comment
5	30	400	5.6	hello	im	comment

With no sheet
Collimator Size (mm)	Exposure (s)	ISO	f-number	File name	Image	Comments
5	30	400	5.6	hello	im	comment
5	30	400	5.6	hello	im	comment