1 / 10

W. W. Jacobs

W. W. Jacobs. Belle II @ Indiana University. US Belle II Science Readiness Briefing Jan 10-11, 2019. Group Introduction (past interests). Physics : precision measurements in strongly interacting systems (using polarized D.O.F.)

hcraig
Download Presentation

W. W. Jacobs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. W. W. Jacobs Belle II @ Indiana University US Belle II Science Readiness Briefing Jan 10-11, 2019

  2. Group Introduction (past interests) • Physics: precision measurements in strongly interacting systems (using polarized D.O.F.) • STAR(~ 20 yrs): nucleon spin structure / cold QCD studies with longitudinally & transversely polarized pp collisions at RHIC. • Belle (~ 6 yrs): precise light hadron xsections& correlations to extract spin-averaged & polarized fragmentation functions(w/ FF group) • Technology interests: exploit new capabilities / technology • analog and digital detector readout, triggering, HV & LV systems • Belle II KLM readout electronics and iTOP component systems • Achievements (direct / indirect relevance): • STAR di-jet analyses (IU students) putting addt’l / most stringent constraints on gluonic contributions to the spin of the proton. • Belle interference FF + STAR polarized di-hadron correlation measurements enables proton transversity extraction (w/ others) • designed/built/maintain (10kchn, 30 ton) STAR Endcap EM Calorimeter. US Belle II Science Readiness Briefing – Indiana University

  3. Group Introduction (current and future interests) • Physics in progress / projected • expand Belle II interests  synergetic w/ local IU nuclear physics group • dark sector studies; symmetry violations (w/ tau decays) • Bellehadronization/FF studies; transition to Belle II w/ improved statistics, PID, charm tagging and systematics (in collaboration with Duke/Vossen) • continue STAR cold QCD nucleon spin structure studies; possible forward upgrade/return to polarized pp running at STAR in 2021+? • Technology interests in progress • Belle II KLM commissioning & performance (see later slides). • Forward upgrade at STAR; FEE for ECAL/HCAL w/ SiPM readout. • Other support: NSF umbrella grant for the IU nuclear physics experimental group – wwj a non-salaried co-PI (currently, and proposal pending for 7/1/19 – 6/30/22) US Belle II Science Readiness Briefing – Indiana University

  4. Faculty Summary • Will Jacobs, 45% Belle II, 55% Other Stuff (projections) • Belle II: • 25% KLM; FW devel. oversight, commissioning/Belle II performance • 15% begin ramp up on physics analysis • 5% meetings, oversight, shifts, etc. • Other Stuff: • 12.5% Belle; FF group and related, analysis and paper refereeing, etc. • 25% STAR: local group, PWG analysis efforts, upgrades • 12.5% EMCs at STAR: susbsytem oversight and Endcap guru/czar • 5% meetings, reports, shifts, etc. Postdoc / Student Summary • none at present Note: former IU postdoc Yinghui Guan (supported by Belle II ops 2015-18) had a large impact on KLM commissioning, analysis and ops; she also performed a Belle analysis on Lambda transverse polarization (PRL accepted). Yinghui is now at Univ. Cincinnati. US Belle II Science Readiness Briefing – Indiana University

  5. Engineers • Brandon Kunkler(KLM subsystem) • design and fabrication of original RPC FEE and Data Concentrator (DatCon) electronics boards. • original FW and development for RPC / DatCon. • Ongoing commissioning and FW performance upgrades • Gerard Visser(iTOP subsystem) • Design and fabrication of HV divider and front-end boards for the micro-channel plate PMT’s. • engineer heat loading mitigation for front end FEE and board stack assemblies. • misc. component design and specification, etc. Brandon Kunkler Gerard Vissser • Subcontracts: • PNNL (Belle II operations) 1/2/2017 – 12/31/2018 • BNL (Belle II operations) 1/2/2019 – 9/30/21 US Belle II Science Readiness Briefing – Indiana University

  6. Belle II Activities (hardware) • KLM (RPC + Data Concentrator) • Continue to increase DAQ trigger rate and data loading capabilities with simulation and IU Pocketdaq tests. • Various tasks: replicate RPC FW event builder to increase data bandwidth; align RPC and scintillator trigger hits; implement data collector register checks; contribute to troubleshooting and further updates driven by Phase III commissioning and production running, etc. • iTOP (Front-End boards, calibration Pulsers) • Fabrication of ~ 70 more front-end boards for replacing conventional MCP-PMTs on 7 bars by life extended ALD PCP-PMTs by summer 2020(in coordination with Nagoya group). • Fabricate custom pulsers for iTOPfor use in alignment calibrations (replaces fancy on-loan/disappearing pulser system presently in use) Front end board and voltage divider in bench test jig at IU. US Belle II Science Readiness Briefing – Indiana University

  7. Belle II Activities (cont.) • Achievements (recent) • stable operation of RPC/DataConcentrator FW beyond 30 kHz benchmark; now default at KEK for full detector testing (includes transition to revo9 timing, etc.) • Prototype iTOPpulsertested on detector at KEK; final specifications now in hand for fab./delivery in February. • Produce spare DatCon boards (to be tested/delivered during Phase III commissioning). Note: these to replace original spares misplaced at KEK. • Directions and transitions • hardware: more of the same • physics: dark sector and low multiplicity physics Pocketdaq at IU working groups (leverage relevant detector efforts) • Collaboration (tech) w/ other US Belle II groups: discussions with Univ. of Louisville group: adaptor between KLM config. DB & Data Concentrator registers, monitoring, possible future KLM FW tasks. US Belle II Science Readiness Briefing – Indiana University

  8. Personnel % Belle II Effort by FY (projected) Personnel location by FY US Belle II Science Readiness Briefing – Indiana University

  9. Conclusion • Our technical contributions are … • support of commissioning & performance upgrades to KLM with strong engineering contributions to KLM and iTOP developments. • Our physics interests are: • continue w/ hadronization (FF) studies at Belle / transition to Belle II. (collaboration w/ US Belle lI group @ Duke Univ. / Anselm Vossen) • follow (new) interest in dark sector (focus on early results) and symmetry violation physics. • In 2017-2018 we achieved: • operational FW for KLM RPC &Data Concentrator for phase II running and significant progress on phase III tasks (including fabrication of addt’l Data Concentrators) . • contributions to phase II KLM commissioning, FW debug & detector operations troubleshoot. • several Belle Fragmention group papers published … contributed both intellectually in FF group and as referee chair (in addition to Vossen/Guan). Thank You! US Belle II Science Readiness Briefing – Indiana University

  10. BACKUP US Belle II Science Readiness Briefing – Indiana University

More Related