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LARP Accelerator Systems Status & Plans

US LHC Accelerator Research Program. BNL - FNAL- LBNL - SLAC. LARP Accelerator Systems Status & Plans. 13 July 2009 DOE Review, FNAL Tom Markiewicz/SLAC. The FY10 LARP Accelerator Systems Program. Instrumentation

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LARP Accelerator Systems Status & Plans

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  1. US LHC Accelerator Research Program BNL - FNAL- LBNL - SLAC LARP Accelerator Systems Status & Plans 13 July 2009 DOE Review, FNAL Tom Markiewicz/SLAC

  2. The FY10 LARP Accelerator Systems Program • Instrumentation • Beam Commissioning of Tune & Coupling feedback systems, Schottky Monitor, AC Dipole and Synchrotron Light Monitor • Luminosity Monitor • LLRF modeling and commissioning • Collimation • Rotatable Collimator as a Phase II Secondary Collimator candidate • T980 Crystal Collimation Study at the Tevatron • UA9 Crystal Collimation Study at CERN’s SPS • Hollow electron lens as a scraper for LHC • Accelerator Physics • Electron lens as a Beam-Beam interaction compensator • Control of E-cloud induced beam instability in SPS through RF feedback • Crab Cavity R&D program • PS2 Design Study Acc.Systems Status - T. Markiewicz

  3. Task List & FY09 Budgetas ofMay’09 rev. Acc.Systems Status - T. Markiewicz

  4. Themes for this Presentation • 2008 Review Recommendations • Develop a more strongly coupled and transparent relationship with CERN management • Drop activities not deemed high priority by CERN • Ensure that any “item to be delivered to CERN” is delivered • Manage such items as a separate project • Develop a clear and open system to prioritize LARP projects • 2009 Review Charge • Determine the priorities and levels of R&D effort LARP should apply to position the U.S. for participation in the upcoming LHC upgrades • Multi-year plan • Timeline & resource requirements • Scientific and Technical risks Acc.Systems Status - T. Markiewicz

  5. Program Oversight through Increased Communication • Accelerator Systems Advisory Committee created to parallel Magnet SC • Bruning (CERN), Fischer, Markiewicz, Prebys, Ratti, Peggs • ASAC meets (Webex) ~bi- weekly on general matters or as crisis management team • Task prioritization & Budget allocation • LARP Collaboration Meeting (CM) Planning • Luminosity Monitor Project Management • LARP Tasks have been coalesced into units large enough to warrant regular Webex meetings and see to it that these are held with additional participation of Program Leader, Deputy, L1, relevant L2 AND CERN Points of Contact • As opposed to reports of isolated work to general LARP membership at semi-annual CMs Acc.Systems Status - T. Markiewicz

  6. CERN and LARP Communication • Occurs at various CERN levels • CERN Point(s) of Contact: • eg. Assmann (Collimation); Bravin (Lumi); Benedikt(PS2), … • CERN LARP contact: Oliver Bruning • tasked with assimilating POC reports and upper management priorities • CERN middle managers: Ostijic (IR Upgrade Czar) • CERN key managers: Evans/Myers • CERN Director • Roughly mapping onto LARP • LARP Task Leader • Markiewicz (Collimation); Ratti (Lumi); Wienands(PS2), … • LARP L1 (Markiewicz) • LARP APUL czar (Wanderer) • LARP Program Leader (Prebys) • OHEP (Strauss, Kovar) • Oral “story” sometimes inconsistent and full set of players never in same room • Inadequate written correspondence • Improvement in both these areas required Acc.Systems Status - T. Markiewicz

  7. CERN Input to FY10 LARP ProgramBruning Report to ASAC • Context: • 1) Lumi Mon assumed to be done by FY10 and not part of list; otherwise 1st priority • 2) Other "Done" projects, plus Lumi, will require some amount of funding for commissioning activities: these include Schottky, AC Dipole, Chromaticity Feedback and any continued work on the Synchrotron Light Monitor • 3) Bruning will go back again to CERN LLRF group & Myers to clarify CERN position on LLRF task • Ordered List: • 1) Rotatable Collimator • 2) PS2 • 3) SPS Ecloud control through RF feedback or other means • 4) Elens as collimation scraper • 5) R&D that will happen even if not supported by LARP: • - Elens Beam-Beam compensation (BNL & RHIC) • - T980 (FNAL) • - UA9 (existing CERN-Russian-Italian-US collaboration) • 6) Crab: in this position because it requires a non-LARP framework to fund it • 7) H- emittance monitor for Linac 4 • 8) LLRF studies (despite "last place" rank LARP contribution appreciated as valuable & support for commissioning should be provided; CERN management perspective is that CERN, not LARP, must "own" this role) Acc.Systems Status - T. Markiewicz

  8. Extra-ordinary Meetings • US-CERN Meeting (2009 Jan 14) • Heuer, Myers, Evans, Bruning, Ostijic, Assmann, .. • Relevant AS take away point for LARP • Crab activity perceived as LARP-driven. For CERN to proceed questions to be answered must include • What is impact to LHC? • What can be measured? • What will be learned? • What is risk to LHC? • Phase II Collimation Conceptual Review (2009 April 2-3) • Full participation of Rotatable collimator team plus LARP management • LHC will require • “Cryo-collimators” (collimators embedded in cold regions of LHC) • A new “High Radiation Materials Test Beam” (TT60 line) as part of MTP • Phase II secondaries of a type to be determined only after experience with LHC and prototype testing in TT60 Acc.Systems Status - T. Markiewicz

  9. CERN Mid-Term-Planning Timeline Acc.Systems Status - T. Markiewicz

  10. LARP Management OversightInstrumentation Task Meetings • Chromaticity FB, Schottky, AC Dipole, Synchrotron Light Monitor • No regularly scheduled “public” meetings • Contact between LARP & CERN POCs, esp. during commissioning trips • Reports at parallel sessions of CMs • No direct management oversight • Luminosity Monitor • Regular LBL staff mtgs and Ratti/Bravin mtgs during CERN trips • Biweekly status meetings since June 2008 with • Prebys, Markiewicz, Bruning, Peggs, Ratti, Bravin, Corlett (LBL mgmt), 2 LBL EEs • Written status report distributed after each meeting • Full grilling by AS at CM#11,CM#12 followed by plenary report to LARP • LLRF • SLAC 5 person group plus 2 CERN POCs call/exchange email • Many working trips to CERN • Work status presented at LARP CMs and at SLAC ARD seminars • No direct management oversight Acc.Systems Status - T. Markiewicz

  11. LARP Management OversightCollimation Task Meetings • Rotatable Collimator • Weekly staff (5) mtg at SLAC with web-posted progress report • Biweekly webex/video with CERN collimation group (5-10 people) • Notes & slides posted • Reports at parallel session of CM mtgs & included in plenary summary • CERN-organized meetings (P-II Conceptual Review, Beams’07,..) • Crystal Collimation • Bi-Weekly Webex meeting to which all members of both T980 (Fermilab expt.) and CERN SPS UA9 are invited • Typically SLAC(5), BNL(1), Markiewicz, Prebys, Peggs & Scandale (CERN) attend • Approx. monthly reports from Mokhov on T980 • Unknown but large number of bi-lateral UA9 meetings in Europe • Regular meetings of FNAL T-980 staff & FNAL resident visitors • Semi annual mini crystal workshops & LARP CM presentations Acc.Systems Status - T. Markiewicz

  12. LARP Accelerator Physics Task Meetings • Electron Lens for Beam-Beam Compensation • No regular working meetings (to my knowledge) • Annual mini-wkshps (eg. 12/3/08 at BNL) & reports at parallel session of CMs • Ecloud • Monthly Webex attended by CERN (3-4), SLAC (3) and LBL(3) and typically Fischer, Prebys & Markiewicz • Semi-annual meetings in context of global Ecloud effort (eg. EC Mitigation-08 CERN, 12/08) and CARE series of workshops • Reports in parallel session of CMs • Crab Cavity • Monthly international webex with large participation • UK, KEK, CERN (incl. LARP-residents), BNL, SLAC, FNAL, LBL, AES • Prebys, Markiewicz, Peggs, Strait • Annual mini-workshop, ~quarterly mtgs at CERN, LARP CMs & CARE • PS2 • Weekly/biweekly webex with BNL, FNAL, LBL & SLAC w/ Prebys & Markiewicz • CM and CERN organized workshops Acc.Systems Status - T. Markiewicz

  13. LARP Accelerator Systems Highlights • Luminosity Monitor: • All hardware is at CERN and all hardware that can be installed is installed • Rotatable Collimator: • First prototype jaw passes thermal mechanical tests • Majority of hardware for 3 more jaws (2 full collimators) in hand; fabrication in progress • PS2 • 5 year plan focused on intensity-related effects involving the 4 LARP labs coordinated with CERN; early results • SPS Ecloud • SPS measurements during 3 MD periods show effects that can be simulated; RF modeling to control instabilities has begun • Crab Cavity • Baseline design of cavity/coupler exists and SBIR to fabricate a cavity approved • Multinational, multilab effort working/meeting regularly to develop plan • Other • Crystal experiments UA9 and T980 installed full-time & taking data regularly • E-lenses for RHIC approved & feedback for LHC expected • LLRF model used to commission LHC system without beam; beam commissioning planned • HW commissioning for Schottky, AC Dipole & Tune/Chromaticity FB complete • New Synchrotron Light Monitor designed, assembled & installed with LARP effort Acc.Systems Status - T. Markiewicz

  14. Project Management • LARP Acc. Systems is producing hardware for CERN in 3 areas • Lumi Monitor • Rotatable Collimator • Roman Pot for SPS Crystal Collimation Expt #UA9 • And is (was) considering delivering a crab cavity prototype • My thoughts: • Each of these would ideally be managed outside of LARP • Mission creep and external schedule slippage compound internal problems • Annual reviews necessary but not sufficient • Aug. 2007 Lumi review & April ’08 CM10 did not foresee June’08 ‘crisis’ • Monthly budget reporting with “earned value” necessary but not sufficient • Lumi has convinced me that some external manager(s) must follow progress ~biweekly to fully understand the project in real time so that surprises do not happen • TWM is trying to do this for the UA9 RP (reporting to Eric) • No one forces TWM to do this for RC Acc.Systems Status - T. Markiewicz

  15. Luminosity Monitors2 per IP + One Spare Shaper (& Chassis) Preamp/HV Assembly Detector Interface ChassisGAS Distribution/Monitoring PanelPC for Local Monitoring 1 per IP DAQ Firmware Acc.Systems Status - T. Markiewicz

  16. Luminosity Monitor “Crisis” & Response • As Lumi is/will be the first LARP produced hardware installed in LHC it is essential that we deliver • June 2008 letter from CERN luminosity monitoring group leader Enrico Bravin raised concern that • Lumi might be be late for 2008 run • PMT system would be deployed for 2008 • As long as robust system ready for 2009, no harm • Response: • Major LARP support in FY09, before CY2009 run, to fully complete the system (electronics fabrication, firmware, software & integration) • Biweekly meetings of LARP ASAC w/Ratti-Bravin since June 29, 2008 • 20 meetings held with written reports (TWM) • Greatly increased involvement of LBL management (Corlett + EE Head) • MS Project maintained by LBL EE & kept up to date • Ongoing discussions on how to minimize commissioning cost & handoff Acc.Systems Status - T. Markiewicz

  17. Lumi Status: All Hardware InstalledHardware Commissioning in Progress • All required Hardware Installed in LHC points 1 and 5: • Detectors (4) (plus spare at LBNL) • Preamps (4) • Shapers (4) • Detector Interface Units (2) • Gas Panels • Detailed list of noise issues, damaged RTDs, faulty power supplies, gas system leaks, unequal cable lengths, temperamental gas controllers all being worked on • Firmware • Phase I (Low Luminosity “Counting”) complete & being tested • Phase II (High Lum pulse height with centroid deconvolution) a future project • System Modeling: New Toohig Fellow Ryoichi Miyamoto Acc.Systems Status - T. Markiewicz

  18. US LHC Accelerator Research Program BNL - FNAL- LBNL - SLAC LARP Rotatable Collimators for LHC Phase II Collimation • Adapt rotatable NLC design concept to LHC: “RC” • Build and test one collimator jaw with 10kW resistive heaters to verify thermo-mechanical performance • Minimize deflection when absorbs with 60kW for 10 sec • Build a collimator that can be destructively beam tested at new TT60 facility yet which still rotates, provides clean collimation surfaces, whose cooling system survives and which is UHV • Build a fully functional collimator & test it at LHC Gene Anzalone (CAD), Eric Doyle (ME-FEA, ret.), Lew Keller (FLUKA, ret.), Steve Lundgren (ME), Tom Markiewicz (Phys), Reggie Rogers (Mech Tech) & Jeff Smith (PD)

  19. beam LARP Rotatable Collimator • In TT60 vacuum tank: • ports for camera to observe surface damage • ports for laser micrometers to measure permanent distortion due to thermal shock • DN250 end flanges for easy access to jaws after tests and cool-down • CERN/LHC rack & pinion drives with water & cable quick-connects Acc.Systems Status - T. Markiewicz

  20. LHC Phase II Base Concept Glidcop Jaw - Cu Mandrel wrapped with CuNi coil – Hollow Glidcop Hub / Molybdenum Shaft with 2mm gap from Mandrel 20 facets • Beam spacing: 136mm OD • Length 1.47 m flange–flange: • 930mm overall • 2 x 38mm 15° tapers • 854mm long facets Glidcop Cu Mo Cu coolant supply tubes twist to allow jaw rotation Helical cooling channels 23mm below surface with 16m long 10mm square CuNi tube Hub area Cantilever Mo shaft @ both ends 2mm gap between shaft OD and mandrel ID Acc.Systems Status - T. Markiewicz

  21. Glidcop Jaw – CuNi Coil- Cu Mandrel – Glidcop Hub - Molybdenum Shaft Design 2mm gap 365mm ANSYS of Final Design 7s 880mm: Leff: 95cm→33cm Proposal is to set 1st copper jaw at 8.5 s (or to use C-C in this location) Simulations show that remainder of system maintains efficiency Acc.Systems Status - T. Markiewicz

  22. RC0 10kW Distortion Test Acc.Systems Status - T. Markiewicz

  23. Second Generation Version of Collimator Assembly Support, Rotation Mechanism, and RF transition to Vacuum Tank RF Transition Possible BPM location Acc.Systems Status - T. Markiewicz

  24. Plan to Make 3 More Cylinder Jawsfor total of 4→Two Full Collimators 1st of 3 new mandrels finished March 28 Plan: RC1-SPS/TT60 end of 2009 RC2-LHC in 201n 6 Moly Half-shafts at SLAC Acc.Systems Status - T. Markiewicz

  25. Status of RC Program • Jaw support & rotation mechanism COMPLETE (June 2007) • First full single jaw-hub-shaft unit COMPLETE (May 2008) • Thermal distortion tests indicate performance in accord with FEA to ~10% (July 2008) • Vacuum & flatness measurements all good • Since June 2009 DOE Review • RF design finalized • New concepts for vacuum tank, jaw support, braze process developed • Copper mandrels for 3 new jaws bored and grooved • Molybdenum support half-shafts and central glidcop hubs for 3 new jaws made • Glidcop for 3 jaws obtained ($56k) and machined parts for 1 jaw ready • 2nd jaw-hub-shaft unit being assembled & brazed week of July 13-17, 2009 • Work to complete RC1: • Finish 2nd jaw & modify 1st jaw so it is useable in collimator vessel • Build supports & rotator mechanism and assemble with RF features in new vacuum tank • Metrology & vacuum tests at SLAC • Mechanical motion tests on existing CERN system • Ship to CERN Acc.Systems Status - T. Markiewicz

  26. LARP RC Timeline for Discussion • 2009 Build fully functional prototype • Vacuum & mechanical tests at SLAC • 2010 Ship to CERN • Vacuum & mechanical tests at CERN • SPS Tests of impedance and BPMs • 2011 Modest involvement in Phase I collimation commissioning • 2012 Develop diagnostics for damage assessment • 2013 Test prototype in TT60 • 2014 Apply lessons learned to production design • Build 2nd prototype for testing in LHC • - recent planning has always assumed a 2nd test in LHC • Given uncertainties: Build for 2010 SPS test and wait and see Acc.Systems Status - T. Markiewicz

  27. Roman Pots & Flanges with Detector Housings with thin widows produced by LARP/SLAC for UA9 Acc.Systems Status - T. Markiewicz

  28. Support Structure and Linear Screws Still to be Delivered to UA9 by LARP/SLAC Acc.Systems Status - T. Markiewicz

  29. Long Term PlanningGeneral Comments • At CM12 a first cut of program and budget requests was submitted by each task • One round of discussions with lab POCs and task leaders has occurred to better pin down • Lab-to-lab split • LARP-to-Off-project labor split • Individuals by name & status (staff, PD, GS) and their FTEs • identify unitarity problems • At this point, usual spreadsheet approach in $ assuming • One very coarse overhead loaded salary ($250k) used to convert LARP funded FTEs to dollars • M&S and travel requests assumed to include lab overhead • FY09 numbers have been constructed to reflect the actual budget (before contingency allocation) Acc.Systems Status - T. Markiewicz

  30. FY09-FY14 Plan Acc.Systems Status - T. Markiewicz

  31. Accelerator Systems Not too bad for 1st try! Acc.Systems Status - T. Markiewicz

  32. PS2 Plan w/ time, manpower, subtasks Acc.Systems Status - T. Markiewicz

  33. PS2 Outyears Acc.Systems Status - T. Markiewicz

  34. PS2 Program Milestones by subtask & year Acc.Systems Status - T. Markiewicz

  35. PS2 Acc.Systems Status - T. Markiewicz

  36. Rama’s Input to this Excercise Acc.Systems Status - T. Markiewicz

  37. CRAB Acc.Systems Status - T. Markiewicz

  38. Rotatable Collimator Plan based on schedule shown by Assmann at April 2009 Collimation Review Acc.Systems Status - T. Markiewicz

  39. Luminosity Monitor Acc.Systems Status - T. Markiewicz

  40. SPS Ecloud Feedback Scrubbing exercise reveals 2 FTE/year are presumed to be students (Good!), unitarity mildly violated (especially when discussed with lab POC & other work planned) and 25% “padded”. Good discussion of how much off project help each lab could contribute by name. Out year program a wish-list (not necessarily bad). Acc.Systems Status - T. Markiewicz

  41. FY10 Challenges in Accelerator Systems • Commission Luminosity Monitor and scale back task • Deliver RC Prototype to SPS and scale back task • Launch Crab Cavity with correct level of effort ($), matching CERN interests & schedule • Launch PS2 program • Measure & understand SPS Ecloud & to begin to model a RF correction • Keep T980 and UA9 crystal efforts LHC application focused. • Use LARP provided LLRF models to beam commission LHC • Successfully beam commission all HW to which LARP contributed • Decide if & how to begin E-Lens scraper task • Keep LHC beam-beam study personnel intellectually involved while RHIC constructs E-lenses Acc.Systems Status - T. Markiewicz

  42. Longer Term Plans • While Nb3Sn magnet program is goal oriented toward a possible Phase II (2020?) upgrade construction project (APUL-II?) opportunities for US collaboration in Accelerator Physics challenges should only increase as LHC turns on and attempts to increase luminosity. • The apparent falloff in the 5 year budget is more a reflection of our lack of detailed knowledge of what the future will bring than any lack of ideas of how to contribute to that future. For example, • crab construction, collimation construction, RF feedback system construction, ps2 hardware construction, electron lens scraper construction, crystal collimation primary collimators, electron lens beam-beam compensator construction, increased effort in running & understanding • would all tend to invert the out year slope of the budget curve, and one could argue, should. Acc.Systems Status - T. Markiewicz

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