{"paper":{"title":"A beam monitor using silicon pixel sensors for hadron therapy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.med-ph"],"primary_cat":"physics.ins-det","authors_text":"Chaosong Gao, Daming Sun, Dong Wang, Guangming Huang, Hua Pei, Huili Kang, Jun Liu, Le Xiao, Nu Xu, Ping Yang, Shuguang Zou, Xiangming Sun, Yan Fan, Zhen Wang","submitted_at":"2016-11-22T05:30:47Z","abstract_excerpt":"We report the design and test results of a beam monitor developed for online monitoring in hadron therapy. The beam monitor uses eight silicon pixel sensors, \\textit{Topmetal-${II}^-$}, as the anode array. \\textit{Topmetal-${II}^-$} is a charge sensor designed in a CMOS 0.35 $\\mu$m technology. Each \\textit{Topmetal-${II}^-$} sensor has $72\\times72$ pixels and the pixel size is $83\\times83$ $\\mu$m$^2$. In our design, the beam passes through the beam monitor without hitting the electrodes, making the beam monitor especially suitable for monitoring heavy ion beams. This design also reduces radiat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.07147","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}