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Persistent URL http://purl.org/net/epubs/work/31598223
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Record Id 31598223
Title Optical System Design for The ESS Proton Beam and Target Diagnostics
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Abstract The high power and low emittance of the ESS proton beam require a robust protection strategy for the spallation target and its surroundings. For this, a suite of instruments has been established, including an imaging system for the beam on target. It will be imaged by scintillation on passing through thin screens coating both the proton beam window (PBW) on exit from the accelerator, and also the entry window to the target (TW). Light from the screens must be transported to remote cameras through a 4m high shielding plug with a restricted aperture. At the same time, the optical path must not compromise the integrity of the shield against neutrons and other beam interaction products. We present the theory underlying the design of the reflective optics for efficient transmission of high-quality images to provide the desired level of protection to the machine, and describe the implementation of the design in Zemax OpticStudio software, as well as the predicted performance of the imaging system. We also consider how the requirements of environment (thermal and radiation), initial alignment and ongoing maintenance for the optical system can be met. We conclude with comments on the applicability of optics of this type for diagnostic systems in similar situations at other neutron sources and elsewhere.
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Language English (EN)
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Paper In Conference Proceedings In 7th International Particle Accelerator Conference (IPAC'16), Busan, Korea, 8 May 2016 - 13 May 2017, (2016): 347-349. http://accelconf.…/papers/mopmr043.pdf 2016