Proton Calorimetry/Experimental Runs/2021/Apr15
Afternoon test at UCLH with photodiodes and CMOS sesnor.
Experiment Equipment
| Item | Notes |
|---|---|
| Network Hub | Set in control room to take output from experimental room ethernet connection. Control laptops connected via 5GHz WiFi. |
| Control Laptop x3 | 2x remote control for sensor and FPGA, 1 for notes/web GUI. |
| Ethernet Cable x 3 | To connect DAQ laptops to network in the experimental room, network hub to network in control room. |
| Portable Enclosure | Modified Big Zarges Waterproof Wheeled Equipment Case.
Features mount for scintillator stack, front and back openings for beam, patch panel with ports for SHV, BNC, SMA, USB, Camera Link cables. |
| Scintillator stack | X x 2 mm, Y x 2.6 mm and Z x 3 mm sheets in ascending order from the front/beam of the end of the scintillator. Sheet numbers from front to end (in beam direction): UNKNOWN. |
| ISDI CMOS sensor | sensor pixel dimension: 1030 x 1536. NO optical grease between scintillator and sensor. Connected to DAQ PC via Camera Link cable. |
| Nikon D7500 | Connected to DAQ Laptop via USB cable. |
| DAQ laptop x2 | Control sensor and photodiode acquisition. |
| Nexys Video FPGA development board. | For interfacing between DDC232 and PC. |
| Rev. 2 Texas Instruments DDC232 custom circuit board (x2) | Each housing 16x Hamamatsu S12915-16R photodiodes, coupled directly to scintillator sheets. |
| Gloves | For handling scintillator |
| Digital Caliper | For measuring PMMA air gaps |
Range Detector Experiment
ISDI Sensor Instructions
General Sensor Configuration
- Base Configuration is 14 x 1 Bit
- Resolution is 1030 x 1536 pixels
- For selecting pixel rows in centre: Use horizontal offset (ignore DVAL to activate field) and horizontal resolution
Increase number of frame buffers
- To increase the number of frame buffers to the allowed maximum, start XCAP as administrator.
- Select Capture/Sequence Capture/Video to Frame Buffers/Driver Assistant
- Tick box in left field, then set number of frame buffers here.
Serial Terminal instructions for ISDI sensor
- Find serial terminal in PIXCI(R) tab of sensor control software.
- In Controls/Options: Make sure "Send string with CR" is selected. Should be default.
- In Controls/Setup: Select Serial Port: Enabled. Baud rate has to be 115200
- Set low full well mode using W000300000
- Set high full well mode using W000300004
- Read full well mode using R0003
Continuous Field buffer setting
- This setting makes sure that the buffer is filled with a new frame as they come in. If this option is not selected the sensor and software will not be synchronised and we *will record a lot of pitch black images.
- Select Capture/Live Options//Live Mode/Live Video: Continuous All buffer capture
Experiment Plan
- Shoot-through measurements (back & front) for light calibration and level setting.
- Range measurements between 70-120 MeV with 1mm steps with CMOS sensor and photodiodes.
- High intensity range measurements between 70-120 MeV with 1mm steps with photodiodes at optimal light level.
- Live measurement of 3cm x 3cm x 3cm treatment plan.
Experiment Notes
Range calorimeter measurements with ISDI sensor + photodiodes.
Images from sensor: TBD
Photodiode hexadecimal data: TBD
- full sensor area
- shooting on BACK WINDOW
| Run number | Full Well Mode | Beam Energy (MeV/u) | Range (estimated) | N particles (Hz) | Spot size (mm) | DDC232 FSR (pC) | DDC232 Integration Time (us) | Degrader WET (mm) | Comments | Thumbnail |
|---|---|---|---|---|---|---|---|---|---|---|
| 00 | high | None | - | None | None | 350 | 170 | 0 | background |