{"paper":{"title":"Beam extraction studies at 900 GeV using a channeling crystal","license":"","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"A. Asseev, A. Bogacz, A. Khanzadeev, A. McManus, A. Taratin, B. Cox, B. Newberger, C.T. Murphy, D. Chen, D. Cline, E. Tsyganov, G. Jackson, G. Solodov, H. J. Shih, J. A. Ellison, J. Rhoades, J. Rosenzweig, N. Mokhov, R.A. Carrigan Jr., S. Baker, S. Ramachandran, T. Prokofieva, V. Biryukov, V. Golovatyuk, V. Samsonov, W. Gabella","submitted_at":"1999-09-29T23:06:35Z","abstract_excerpt":"Luminosity-driven channeling extraction has been observed for the first time in a 900 GeV study at the Fermilab Tevatron. This experiment, Fermilab E853, demonstrated that useful TeV level beams can be extracted from a superconducting accelerator during high luminosity collider operations without unduly affecting the background at the collider detectors. Multi-turn extraction was found to increase significantly the efficiency of the process. The beam extraction efficiency was about 25%. Studies of time dependent effects found that the turn-to-turn structure was governed mainly by accelerator b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/9909062","kind":"arxiv","version":1},"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"}