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Engineering Department ENEN HRMT-23 – Collimator Jaws: Safety Aspects HiRadMat Technical Board Meeting 15.10.2014 A. Bertarelli – CERN EN/MME A. Bertarelli.

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Presentation on theme: "Engineering Department ENEN HRMT-23 – Collimator Jaws: Safety Aspects HiRadMat Technical Board Meeting 15.10.2014 A. Bertarelli – CERN EN/MME A. Bertarelli."— Presentation transcript:

1 Engineering Department ENEN HRMT-23 – Collimator Jaws: Safety Aspects HiRadMat Technical Board Meeting A. Bertarelli – CERN EN/MME A. Bertarelli – CERN EN/MME on behalf of E. Berthomé, F. Carra, A. Dallocchio, M. Garlaschè, L. Gentini, P. Gradassi, M. Guinchard, E. Quaranta, S. Redaelli, A. Rossi, O. Sacristan, G. Valentino Alessandro Bertarelli – EN-MME

2 Engineering Department ENEN  HRMT23 experiment overview  Operation phases & pulse list proposal  Safety aspects  Radiation protection measures  Summary 2 Outline Alessandro Bertarelli – EN-MME

3 Engineering Department ENEN  HRMT23 experiment overview  Operation phases & pulse list proposal  Safety aspects  Radiation protection measures  Summary 3 Outline Alessandro Bertarelli – EN-MME

4 Engineering Department ENEN 4 HRMT-23 Experiment Goals  Integrally test under LIU-SPS beam (up to 288 b, ideally 2.3e11 p/b) jaws for HL-LHC collimators (simulation of ultimate HL-LHC Injection Error)  Determine damage thresholds for HL-LHC Jaws (if lower than ultimate HL-LHC Injection Error)  Acquire online data about response of complete jaws to beam impact  Assess impact consequences on jaws components after irradiation HRMT-23: Test of Fully Assembled Jaws  Main Features:  Three superposed jaws in one tank.  Jaws equipped with set of strain gauges, sensors, … for online acquisition.  Special tank equipped with viewports for optical acquisition, LDV, electric connections etc. and fast dismounting system for glove box post-irradiation observations Alessandro Bertarelli – EN-MME

5 Engineering Department ENEN Beam parameters shall be consistent with LIU/HL-LHC injection scheme (ideally reaching up to expected HL-LHC intensity and emittance). Preliminary beam parameters:  Beam energy: 440 GeV  Bunch spacing: 25 ns  Bunches per pulse: 1 to 288  Protons/bunch: (desirably) up to 2.3 e11 p/b  Beam size: 1x1 mm 2 down to ~0.5x0.5 mm 2 at maximum intensity (beam size should match expected HL-LHC emittance, however it may be reduced to 0.3x0.3 mm 2 to compensate for possible lack of beam intensity…)  Impact parameter: 1 to 5 mm  Total expected number or protons ~ 3e14 p 5 Preliminary Beam Specification Alessandro Bertarelli – EN-MME

6 Engineering Department ENEN 6 HRMT-23 Overall Design  3 separate complete jaws extensively instrumented.  Stainless steel vacuum vessel (p > mbar). Quick dismounting system to access and manipulate jaws in a glove box.  Be/CFC vacuum windows: design to withstand higher energy density and intensity  Horizontal actuation inspired by collimator movable tables; Stroke (H): 28 mm  Vertical movement of the whole tank; stroke (V) +/-142 mm. 3 separate beam windows sets for each jaw  Control system derived from HRMT-14  Standard HiRadMat support table:  Total envelope: 1.2(H) x 0.4(W)x 2.1(L) m 3  Total mass ~ 1600 kg Alessandro Bertarelli – EN-MME

7 Engineering Department ENEN 7 HRMT-23 Containment  Vacuum environment: no risk of external contamination  304L vacuum tank verified against static and buckling failure scenarios (G. Maitrejean, EDMS )  Be/CFC vacuum windows: designed to withstand higher energy density and intensity (G. Maitrejean, EDMS )  View ports equipped with special radiation-hard glasses (RS323G19 grade from Schott): robustness and good transparency also in case of high doses  Vacuum seals: same concept and materials (EPDM/viton) successfully adopted for HRMT14  Special movable system with protection glasses to stop ejecta possibly produced at high intensity impacts, protectthe container and allow external observations Alessandro Bertarelli – EN-MME

8 Engineering Department ENEN 8 HRMT-23 Jaws To Be Tested Currently envisaged proposal for Jaws: 1. HL-LHC Secondary Collimator Jaw (TCSPM) with 10 Molybdenum Carbide – Graphite inserts (some inserts possibly coated). 2. HL-LHC Secondary Collimator Jaw (TCSPM) with 10 Copper – Diamond inserts. 3. TCSP jaw: to verify the resistance of Phase I C/C jaw to beam injection accident with HL-LHC parameters (double intensity, smaller emittance w.r.t Phase I) … Alessandro Bertarelli – EN-MME

9 Engineering Department ENEN 9 HRMT-23 Jaws Assembly  Each jaw can be (mounted and) dismounted independently to ease post-irradiation manipulation  A small independent water expansion tank will be installed on 2 TCSPM jaws to allow measuring pressure burst in cooling circuits  Simulations to be performed to assess energy deposition and pressure burst in water!  TCSP jaw recovered from spare (outgassing) TCSP collimator Alessandro Bertarelli – EN-MME

10 Engineering Department ENEN 10 HRMT-23 Thermal Simulations TCSx with MoGR TCSx with CuCD Molten region! T max >>T melt,CuCD T max 2000° FLUKA energy deposition maps courtesy of S. Lefteris Temp (C) Alessandro Bertarelli – EN-MME

11 Engineering Department ENEN 11 HRMT-23 DAQ and Electronics  Instrumentation (MME Mechanical Lab). Main objectives:  Acquire online pressure waves on most relevant components (mostly jaw inserts).  Acquire online temperatures on relevant locations.  Detect online high speed vibrations (pressure wave – induced )  Detect online low speed oscillations (full jaw flexural modes)  Detect offline (possible) permanent jaw deformation  Visually Record (possible) jaw explosion / fragmentation  Detect offline (possible) internal material damage (e.g. delamination, cracks, tunneling …)  Record online pressure burst in water cooling pipes  Motorization: controls and hardware compatible with HRMT-14. Updated software interface required. Help by EN/STI/ECE …  Acquisition System: the DAQ hardware and infrastructure should be designed and implemented with a comprehensive view on a larger spectrum of HiRadMat Experiments  Synergy with and contribution from other experiments and projects Alessandro Bertarelli – EN-MME

12 Engineering Department ENEN 12 HRMT-23 Instrumentation  Sensor positioning (adjustable) Strain gauge Temperature probe Laser Doppler Displacement Sensor Alessandro Bertarelli – EN-MME

13 Engineering Department ENEN 13 HRMT-23 Advanced Instrumentation  Ultrasonic non destructive tests. Under study, not yet confirmed.  Ultrasonic mapping along Z axis  Cracks and phase changes in the jaws  Not online… checking between impacts  Probe compatible with 1000kGy and 350°C Alessandro Bertarelli – EN-MME

14 Engineering Department ENEN 14 HRMT-23 Advanced instrumentation Alessandro Bertarelli – EN-MME  Distributed strain measurements by FOS. To be studied.  Beam perturbation should be limited  No impact on the channel numbers for the DAQ  Fast DAQ (2MHz)

15 Engineering Department ENEN  HRMT23 experiment overview  Operation phases & pulse list proposal  Safety aspects  Radiation protection measures  Summary 15 Outline Alessandro Bertarelli – EN-MME

16 Engineering Department ENEN  Test runs: Late Spring 2015  Expected experiment duration: 1 full week  At least two persons from the experiment team to stay in the CR during all phases of the experiment set-up and test runs  HRMT23 team can access DAQ control system from any CERN standard computer via LAN connection (Virtual Machine).  No access request is expected during tests, except in case of issues and in any case in line with safety rules.  Webcams will be placed underground to identify possible issues and evaluate solutions before requesting a direct access.  After the experiment: equipment to be placed in the facility storage area for the time required to decrease to an acceptable activation level.  Attention to be paid in not damaging vacuum bellows during handling! Operation Phases Alessandro Bertarelli – EN-MME16

17 Engineering Department ENEN Pulse List (Tentative) Alessandro Bertarelli – EN-MME17 No IntensityBeam spot [mm] Bunch spacing [ns] Pulse length [us] # bunchesp/bunchTotalSigma_xSigma_y E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E  Alignment, pilot bunches Damage threshold for TCSP buttons/taperings Safe (?) Limit for TCSPM MoGr jaw Damage threshold for TCSPM CuCD jaw  Alignment, pilot bunches HL-LHC beam injection error “wish” case Total intensity ~ 3E14 protons

18 Engineering Department ENEN Pulse List: Remarks Alessandro Bertarelli – EN-MME18  Bunch number and bunch intensity are indicative and may be adjusted as a function of the operation needs: what matters is the pulse intensity  HL-LHC injection error scenario can be highly destructive for CuCD: this is why an intermediate impact with half of the intensity has been added to the table  In case 6.4E13 intensity is not achievable, the maximum intensity available will be requested, decreasing the beam size down to a value acceptable for the Be window  Possible alternative option discussed at Joint HL-LHC WP2-WP5 and ColUSM#46 meeting: 288b, 1.6/1.7E11 p/b if scrubbing is successful; also small emittance could be obtained with BCMS beams

19 Engineering Department ENEN  HRMT23 experiment overview  Operation phases & pulse list proposal  Safety aspects  Radiation protection measures  Summary 19 Outline Alessandro Bertarelli – EN-MME

20 Engineering Department ENEN Safety Aspects Alessandro Bertarelli – EN-MME20  No particular issues for safety are expected  No toxic, no flammable materials  Summary of materials, hazard inventory and risk analysis tables prepared Material Density (g/cm 3 ) N. of Blocs Bloc Size (mm 3 ) Total Weight (g) MoGr x45x CuCD x45x AC150-K x80x Material Name Element Density (g/cm3) Weight Fraction (%) MoGr C Mo CuCD Cu B CD AC150-KC Active jaw materials: size, weight, chemical composition

21 Engineering Department ENEN Safety Aspects Alessandro Bertarelli – EN-MME21 Material Components Estimated Mass [kg] Aluminium AW-6082Actuation800Kg Stainless steel Vacuum tank, beam line flanges and bellows 600Kg Copper-BerylliumRF contacts, mirror clamps2Kg BrassLVDT axis0.3Kg Glidcop Al-15 Collimator jaw housing and stiffener 100Kg Rad-hard glassOptical windows10Kg Beryllium Vacuum windows 0.05Kg Copper-Nickel CuNi90-10 Collimator cooling pipes10kg Zerodur® glass- ceramic Mirrors2Kg Cables Conductor : Bare copper Insulation : PE Pair screening: Al/ PETP/Al foil Overall screening : 0,15 mm tinned copper braid, 12 Strain gauges Polyimide support Constantan foil negligible GlueEpoxy resinnegligible PCB Cards for the switch Fiberglass, copper, and resin2 Other materials adopted for the experimental apparatus

22 Engineering Department ENEN Hazard Inventory Alessandro Bertarelli – EN-MME22  Pressure:  Shockwave max. pressure ~ 10 GPa  Vacuum: mbar  Temperature:  ΔT on the most loaded jaw~ 7000K  Electricity (to be confirmed):  24 V  4 Capacitors: 400 V; 3300 μF  Ionizing radiations:  Particle type: protons  Pulse intensity: up to 288 bunches, 2.5E11 p/b  Beam energy: 440 GeV  Motor:  Lateral speed: 240 mm/min  Vertical speed: 120 mm/min Thermal properties of materials to be tested Material Specific Heat [J/kg/K] Thermal Conductivity [W/m/K] MoGr ~700770* CuCD AC150-K * 304L Aluminium Rad-hard glass Zerodur® ~800~1 Beryllium Copper Copper-Beryllium Copper-Nickel 38040

23 Engineering Department ENEN Risk Analysis Alessandro Bertarelli – EN-MME23 Everyone involved in setting up the experiment will complete the required CERN safety courses (EDMS n )

24 Engineering Department ENEN  HRMT23 experiment overview  Operation phases & pulse list proposal  Safety aspects  Radiation protection measures  Summary 24 Outline Alessandro Bertarelli – EN-MME

25 Engineering Department ENEN 25 HRTM-23 RP measures  All experiment phases are controlled remotely, no access request is expected during tests  Some of the materials to be irradiated have already been tested in HiRadMat during HRMT09 and HRMT14 experiments  A radiological assessment document for HRMT14 has been prepared (https://edms.cern.ch/document/ /1).https://edms.cern.ch/document/ /1  After irradiation, the time taken by the dismounting operations will be minimized, thanks to the special rapid dismounting system designed Alessandro Bertarelli – EN-MME

26 Engineering Department ENEN HRMT-23 Post Irradiation Plan A. Bertarelli – EN-MME26 Two possible options currently being investigated:  Acquisition (jointly with other partners, e.g. ISOLDE?), of a Glove Box allowing post irradiation analyses of several experiments (HRMT9, HRMT14, HRMT23 and MultiMat)  Exploiting existing facilities in building 109 equipped to work on contaminated materials (currently checking with RP if possible).

27 Engineering Department ENEN HRTM-23 Post-irradiation Plan Alessandro Bertarelli – EN-MME27  After irradiation, additional analyses are foreseen. These include:  Remote observation of impacted jaws through cameras, LDV and ad-hoc viewports (on upstream and downstream sides of vacuum vessel)  Direct observation and in-situ measurements of impacted jaws after dismounting of the tank  After appropriate cool-down time, dismounting of collimator components (jaws and jaw part) in a convenient Glove Box.  Cutting of material specimens in a Glove Box  Metrology, NDT and analysis of cut samples  Waiting for feedbacks from German supplier

28 Engineering Department ENEN  Three collimator jaws in a vacuum tank  Each jaw to be tested under intense proton beam as of Spring Beam Vacuum tank Collimator Jaws Post-irradiation Manipulation Alessandro Bertarelli – EN-MME28

29 Engineering Department ENEN 1 Remove 22 clamps and lift cover of the vacuum tank. ~1800 ~2100 Whole Mass: ~1400 kg  All manipulations to be performed in the Glove Box.  Phase 1: Remove vacuum vessel cover (Glove Box Station 1). 29 Post-irradiation Manipulation

30 Engineering Department ENEN 2 Unscrew the jaw bolts ~1900 ~2100 Jaw bolts 3 Remove the jaw assembly Jaw Assembly Mass: ~ 140 kg ~1200 Post-irradiation Manipulation Alessandro Bertarelli – EN-MME30  Phase 2: Remove jaw assembly (Glove Box Station 1).

31 Engineering Department ENEN 2 Position jaw assembly in Station 2 ~500 ~1300 Jaw bolts 3 Unscrew jaw bolts and dismount the tree jaws Jaw Mass: ~ 40 kg Post-irradiation Manipulation Alessandro Bertarelli – EN-MME31  Phase 3: Remove each independent jaw (Glove Box Station 2).

32 Engineering Department ENEN Post-irradiation Manipulation Alessandro Bertarelli – EN-MME32  Phase 4: Remove jaw components as required (Glove Box Station 2).  Phase 5 (and following): Cut, clean, condition, extract samples as required (Glove Box Station 3)

33 Engineering Department ENEN  Overall maximum dimensions of components to be disassembled in Station 1 are 2200x1900x1200 mm.  Overall maximum dimensions of components to be disassembled in Station 2 are 1300x500x500 mm.  Typical dimensions of components to be manipulated in Station 3 are 200x100x100 mm.  External dimensions of experiments not presented here are expected to fall within given envelopes. Glove Box Estimated Dimensions Alessandro Bertarelli – EN-MME33

34 Engineering Department ENEN Alessandro Bertarelli – EN-MME34 Thank you for your attention! Questions?


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