Innovative Solutions for Thermal Neutron Beam Monitoring

Cutting-edge detector solutions are proposed for thermal neutron beam monitoring, utilizing various configurations such as head-on bGEM with electronics, bGEM with side electronics, and side-on bGEM TPC-like setups. These solutions offer precise detection capabilities within specified envelope dimensions. Additional infrastructure requirements including cabling and sensors are outlined for successful operation of the detectors. Implementation plans for the solutions are in progress, with Solution 1 set for realization soon followed by Sol2b. The detailed summary provides a comprehensive overview of the proposed detector systems and necessary components for efficient functioning.

• Neutron Beam Monitoring
• Detector Solutions
• Thermal Neutrons
• Detector Infrastructure
• Innovative Configurations

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Uploaded on Jul 05, 2024 | 0 Views

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1. GEM based thermal neutron beam monitors

2. Solution 1: Head on bGEM with back electronics for testing Envelope space: Detector+Electronics (no cables or gas pipe considered) Gas Connectros 15 cm 6 cm 15 cm 13 cm Neutrons 13 cm Electronics in the beam This has been already realized and works well

3. Solution 2a: Head on bGEM with side electronics Envelope space: Detector+Electronics (no cables or gas pipe considered) Gas Connectros Move front-end chips out of the beam 4 cm 20 cm Neutrons 20 cm Electronics out of the beam This solution should be developed and would be new FE Chips

4. Sol 2 b:Head On bGEM with side electronics 4 Carioca Boards 64 channels First prototype with kapton pads No carioca board in the beam spot Only 2 mm of material budget SHIFT BOARD FPGA Matrix 8x8 Kapton Anode BEAM Pad Dimenrsion 8x8 mm2 2 mm 100 um matrix dimension 64x64 mm2

5. Solution 2: Side-on bGEM TPC like Few borated slabs inside the beam 3D reconstrucion of the beam image Envelope space: Detector+Electronics (no cables or gas pipe considered) Gas Connectros 15 cm Neutrons This dimension should fit the beam height 13 cm Electronics out of the beam This solution has been already partially developed

6. Summary Detector Solution Envelope X (cm) Envelope Y (cm) Envelope Z (cm) 1) Head-on bGEM with electronics in the beam 13 15 6 2) Head-on bGEM with side electronics 20 20 4 3) Side-on bGEM TPC like To be adjusted to fit beam dimension 13 15

7. Cabling and Sensors All detectors require 2 Gas Pipes (in/out) 6 mm diameter Two T/P/H sensors both on Input and Output to monitor gas properties (temperature, pressure and humidity) The sensors are contained in cylinders with a radius of 3 cm and an height of 10 cm and can be positioned where there is room HV cable (1.5 cm diameter) 16/32 Flat cables for front-end electronics Each cable is 5 cm wide but the full envelope can be contained in a tube of 10 cm diameter A bGEM beam monitor based on Solution 1 will be realized next week Need all described infrastructures to be operated Sol2b will be realized as the next step Lenght of the cables to be determined