Scintillating screens sensitivity and resolution studies for low energy, low intensity beam diagnostics

Area of Science:

• Nuclear Physics
• Particle Accelerators
• Materials Science

Background:

• Accurate beam profile monitoring is crucial for particle accelerator experiments.
• Existing methods face challenges at ultra-low energy and ultra-low intensity regimes.
• Scintillating screens offer a potential solution for these challenging conditions.

Purpose of the Study:

• To investigate the performance limits of scintillating screens for beam profile monitoring.
• To evaluate Cesium Iodide doped Thallium (CsI:Tl), Yttrium Aluminum Garnet doped Cerium (YAG:Ce), and a Terbium glass-based scintillating fiber optic plate (SFOP).
• To assess their response to proton beams at 200 and 50 keV with intensities from picoampere to subfemtoampere.

Main Methods:

• Experimental testing of CsI:Tl, YAG:Ce, and SFOP screens.
• Exposure to proton beams at varying energies (200, 50 keV) and intensities (pA to sub-fA).
• Detailed sensitivity and resolution studies for the most promising screens (CsI:Tl and SFOP).

Main Results:

• CsI:Tl and SFOP demonstrated the highest sensitivity among the tested screens.
• Detailed sensitivity and resolution data were obtained for CsI:Tl and SFOP.
• The study confirmed the feasibility of using these scintillators for ultra-low intensity beam monitoring.

Conclusions:

• CsI:Tl and SFOP are suitable candidates for beam profile monitoring in the ultra-low energy, ultra-low intensity regime.
• Further investigation into their application for ultra-low energy antiproton beam monitoring is warranted.
• These scintillators offer improved capabilities for precise beam diagnostics in challenging experimental conditions.