Development of diamond-based diagnostics for next-generation XFELs

Padilla, R.; Gonzalez, E.; Kachiguine, S.; Martinez-Mckinney, F.; Mazza, S.; Nagel, N.; Nizam, M.; Norvell, N.; Potter, E.; Ryan, E.; Schumm, B. A.; Tarka, M.; Wilder, M.; Jacobson, B.; MacArthur, J.; Torrecilla, I. Silva; Smedley, J.; Zhu, D.; Kim, D.; Bohon, J.; Grace, C.; Prakash, T.; Harris, C. T.; Stuart, D.; Freeman, P.; Prebys, E.; Rowling, C.

doi:10.1016/j.nima.2023.168763

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Development of diamond-based diagnostics for next-generation XFELs

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Abstract

The composition and performance of three different diamond sensor based pass-through diagnostics are presented. A position-sensitive quadrant sensor was designed and characterized using the XPP beam at the SLAC LCLS, demonstrating a generated-charge resolution of 0.025 pC and a position sensitivity of 2 μm, measurable pulse-by-pulse at a repetition rate of up to 50 MHz. A compact signal path capable of repetition rates up to 1 GHz was used to characterize the charge collection properties of diamond sensors as a function of the density of electron-hole pairs created within the sensor, finding a limit of approximately 10 16 electron-hole pairs per cm 3 beyond which the collection efficiency and time began to degrade. Finally, a proposed scheme for measuring ionizing radiation at multi-GHz rates is presented, along with results preliminarily demonstrating signal transport capability in excess of 5 GHz.

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Diamond sensors high bandwidth signal detection high repetition-rate detection

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Padilla, R., Gonzalez, E., Kachiguine, S., Martinez-Mckinney, F., Mazza, S., Nagel, N., Nizam, M., Norvell, N., Potter, E., Ryan, E., Schumm, B. A., Tarka, M., Wilder, M., Jacobson, B., MacArthur, J., Torrecilla, I. Silva, Smedley, J., Zhu, D., Kim, D., Bohon, J., Grace, C., Prakash, T., Harris, C. T., Stuart, D., Freeman, P., Prebys, E., Rowling, C.. 2023-10-16. Development of diamond-based diagnostics for next-generation XFELs. https://doi.org/10.1016/j.nima.2023.168763

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