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@inproceedings{wootton:napac2022-tupa38, author = {K.P. Wootton and A.H. Lumpkin}, title = {{Sublinear Intensity Response of Cerium-Doped Yttrium Aluminium Garnet Screen with Charge}}, & booktitle = {Proc. NAPAC'22}, booktitle = {Proc. 5th Int. Particle Accel. Conf. (NAPAC'22)}, pages = {437--440}, eid = {TUPA38}, language = {english}, keywords = {electron, booster, FEL, linac, storage-ring}, venue = {Albuquerque, NM, USA}, series = {International Particle Accelerator Conference}, number = {5}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2022}, issn = {2673-7000}, isbn = {978-3-95450-232-5}, doi = {10.18429/JACoW-NAPAC2022-TUPA38}, url = {https://jacow.org/napac2022/papers/tupa38.pdf}, abstract = {{Swap-out injection to the Advanced Photon Source Upgrade storage ring necessitates the injection of ~17 nC electron bunches at 6 GeV. To aid with machine tune-up and to measure the beam size, diagnostic imaging screens are envisaged at several locations in the beam transport line from the booster synchrotron to the storage ring. As such, it is important to determine whether the response of these screens to charge is linear. In the present work, we examine the effect of sublinear intensity quenching of a Cerium-doped Yttrium-Aluminium-Garnet scintillator screen. A 1.3 megapixel FLIR BlackFly monochrome digital camera was used to image the beam at the scintillator. At 7 GeV beam energy, over the charge densities investigated (<10 fC um⁻²), an approximately 10 % reduction of the imaging intensity due to quenching of the scintillator was observed.}}, }