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CAF Group Activity Report: Data Analysis and Studies of Minimum Bias and Beam Halo Events

This report details the ongoing work in the CAF group led by Marcello, Davide, Pigi, and others. Activities include analysis of data from minimum bias and beam halo events to study noise, efficiency, event selection, and more. Current investigations involve beam halo selection, trigger studies, noise analysis, and correlation studies.

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CAF Group Activity Report: Data Analysis and Studies of Minimum Bias and Beam Halo Events

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  1. Activity report from CAF group Marcello, Davide, Pigi,Camilo, Salvatore, Orso, David, Silvia,Georgi, Anna, Haiyun

  2. CAF strategy • What kind of data do we have ? • Minimum Bias (low PTmuon mostly from secondary vertex) • Beam Halo (horizontal muon tracks) • Cosmic • What we can study with those events ? • Noise and occupancy • Endcap efficiency • EVENT SELECTION • STUDIES

  3. Whatwe are doingnow ? • Beam Halo selection • Trigger based (Salvatore)  ready • CSC segment based (Haiyun)  almost ready • Minimum Bias selection • RPC rechits + tracker tracks (Orso) • Detector Studies • RecHits distributions with MB and Cosmic (Orso) • CSC/RPC correlation (Camillo, Haiyun, Georgi) • Efficiency with beam halo events (Camillo) • Trigger Studies: CSC versus RPC (Maciek) • Noise (Silvia, David and shifter) • BX distribution (Anna and Pigi)

  4. Beam Splashes

  5. Noise History from DQM (David Lomidze) "noisy strip" state: strip occupancy 3.5 times greater than average occupancy (from roll occupancy histogram) "noisy chamber”: average multiplicity > 6

  6. Historical DQM is on the way

  7. CSC – RPC correlations (Camillo & Pigi)

  8. BX distribution - splashes Roll: RE+2_R3_CH02_C Roll: RE+2_R3_CH20_B Roll: RE+2_R3_CH20_C Roll: RE+2_R3_CH03_C Roll: RE+2_R3_CH21_C Roll: RE+2_R2_CH22_C Roll: RE+2_R2_CH29_B Roll: RE+2_R2_CH29_C Roll: RE+3_R2_CH20_A Roll: RE+3_R2_CH15_B Roll: RE+3_R2_CH16_B Roll: RE+3_R3_CH06_B Roll: RE+3_R3_CH06_C Roll: RE+3_R3_CH36_B Roll: RE+3_R3_CH36_C

  9. Bunch crossing studies from DQM (Anna C. & Pigi)

  10. Minimum Bias muon

  11. Minimum Bias muon

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