engineering department enen hiradmat proposal 1421: multimat hiradmat scientific board meeting...

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A. Bertarelli – EN-MME 1

HiRadMat Proposal 1421:MultiMat

HiRadMat Scientific Board Meeting14.10.2014

A. Bertarelli – CERN EN/MME

on behalf ofE. Berthomé, F. Carra, A. Dallocchio, M. Garlaschè, L. Gentini, P. Gradassi, M. Guinchard, E. Quaranta,

S. Redaelli, A. Rossi, O. Sacristan

14.10.2014

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Context HiRadMat Run 1 experiments (HRMT-09, HRMT-14)

Limitations of HiRadMat Run 1 Experiments

Overview of Future Collimation Experiments in HiRadMat

MultiMat Experiment Proposal

Schedule and Proposes Actions

Conclusions

Outline

14.10.2014 A. Bertarelli – EN-MME

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HRMT-09 and HRMT-14 were very successful and useful experiments, which among other, allowed to:

Confirm numerical simulations Gain confidence in methods and complex

experimental set-up Derive operational limits for installed

hardware (namely TCTA and TCTP).

Context


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HRMT14 Experiment

14.10.2014 A. Bertarelli – EN-MME 4

Benchmark advanced numerical simulations and material constitutive models through extensive acquisition system.

Characterize in one go six existing and novel materials under development: Inermet180, Molybdenum, Glidcop, Mo-CD, Cu-CD, Mo-Gr. 2 sample types, 12 target stations, 88 samples.

Collect, mostly in real time, experimental data from different acquisition devices (Strain Gauges, Laser Doppler Vibrometer, High Speed video Camera, Temperature and Vacuum probes).

High Intensity Samples (Type 2) Strain

measurements on sample outer surface;

Fast speed camera to capture fragment front formation and propagation;

Temperature measurements;

Sound measurements.

Medium Intensity Samples (Type 1) Strain measurements

on sample outer surface;

Radial velocity measurements (LDV);

Temperature measurements;

Sound measurements.

Beam

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HRMT14: Medium Intensity Tests

14.10.2014

Glidcop Sample – Slot#0872 b (scraped), Total intensity: 4.66e12 p, σ 1.3 mm

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HRMT14: High Intensity Tests


Inermet : comparison Autodyn (SPH) between simulation and experiment

Beam

Case Bunches p/bunchTotal

IntensityBeam Sigma

Specimen Slot

Velocity

Simulation 60 1.5e11 9.0e12 p 2.5 mm 9 316 m/s

Experiment 72 1.26e11 9.0e12 p 1.9 mm 8 (partly 9) ~275 m/s

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Context


Limitations of HiRatMat Run 1 Experiments:However, a number of intrinsic limitations exist for HRMT-14 and/or HRMT-09 experiments: Limited online instrumentation for full collimator test (HRMT-09) Lack of intermediate options between specimens and full collimator tests Intrinsically low signal to noise ratio for resistive strain gauges Low signal for low-Z materials (those better surviving the impact …) Relatively low resolution / acquisition rate for high speed camera Pollution by molten material of viewports LDV acquisition on one single specimen per target station. Signal attenuation on cables.

And most notably: A number of novel materials not yet tested …

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Context


Overview of Future HiRadMat Experiments for Collimators

As a follow up to HiRadMat run 1, several Collimation-related experiments are proposed to:

Integrally test under full SPS beam (288 b) jaws and collimators of latest generation (TCSPM, TCTPx, TCTW, SLAC Phase II …).

Repeat the test done in 2004/2006 on Carbon/Carbon collimators (TT40), with increased intensity (HL-LHC scenario) and more extensive and dedicated acquisition devices.

Acquire online data about response of full jaws to beam impact.

Test samples of novel/advanced materials for Collimators with little known constitutive equations under highly bright beams (LIU/HL-LHC).

Benchmark not-yet-explored effects such as code coupling, tunnelling etc.

Possible future proposal …

HRMT-21

Proposal 1421 (MultiMat) This Talk …

HRMT-23

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MultiMat Experiment Goals Test samples of novel/advanced materials for present and future

Collimators under very bright beams Acquire online exploitable data particularly for low-Z materials Confirm/extend constitutive model for high-Z materials. Benchmark not-yet-explored effects such as code coupling

Experiment proposed by Collimation Team on 21.10.2013 (AdColMat meeting) Derived from HRMT-14. Up to 12 target stations, each hosting a different

material. Specimen shape and dimensions to be optimized, possibly varying according to

material (disks, cylinders, bars …). Specimens and test-bench extensively relying on online and offline

instrumentation (upgraded version of HRMT-14).

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Because of its inherently “device-independent” concept, this experiment lends itself to explore material behaviour, benchmark simulations and derive constitutive equations for a large spectrum of materials.

Profit of the experience gathered during Run1 Experiments, particularly HRMT-14, in particular on numerical simulation and

Possibility to create synergy with other projects such as TDI, TCDI, etc.

Proposal to join forces, optimize resources and share costs between BE/ABP, BE/OP, EN/MME, EN/STI, TE/ABT …

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Test material specimens of simplified shape of interest for LHC collimators, injection and dump absorbers, protection devices, etc.

Beam intensity up to 288 bunches, 2.3e11 p/b, beam size down to 0.5x0.5 mm2 (down to 0.3x0.3 mm2 if LIU intensity cannot be reached)

Design and instrumentation inspired by HRMT14 experiment. 12 target stations each hosting several specimens.

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MultiMat Design Main Features

14.10.2014

Design of the experiment inspired by HRMT14

HiRadMat standard Test Stand table 2 beryllium/C-C windows withstanding up

to 288 SPS bunches, sigma 0.3x0.3 mm2 Vacuum Tank (primary vacuum) containing

up to 12 target stations. Each station hosting several specimens

(possibly of different shapes) made of one material.

Each stations aligned through 2 DoF actuation system (beam-based alignment). Required position tolerance: ±0.2 mm

Estimated size: 2100x1200x400mm Estimated weight: 1600kg

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MultiMat Materials

14.10.2014

Test samples of novel/advanced materials for present and future Collimators (and other Beam Intercepting Devices) under very bright beams

Acquire online exploitable data particularly for low-Z materials Confirm/extend constitutive model for high-Z materials. Benchmark not-yet-explored effects such as code coupling

Materials to be tested will likely include: Molybdenum Carbide - Graphite Copper - Diamond Other Ceramic-Graphite composites (under development) Carbon/Carbon (both 2D and 3D grades) Graphite Boron Nitride Glidcop Molybdenum Tungsten heavy alloys (Inermet, W-Re etc.)

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Specimen Shape Options

14.10.2014

Specimen shapes and dimensions being optimized, possibly varying according to material (disks, cylinders, bars …) to improve measurements sensitivity.

Disc 30mm x 40mm Disc 12mm x 100mm

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HRMT-23 DAQ and Electronics

03.10.2014 Alessandro Bertarelli – EN-MME-EDS

Instrumentation (MME Mechanical Lab). Main objectives:

Acquire online pressure waves at relevant locations.

Acquire online temperatures on relevant locations.

Detect online high speed vibrations (pressure wave – induced )

Detect online low speed oscillations (typically induced on slender structure by off-center beams)

Visually Record (possible) specimen explosion / fragmentation

Detect offline (possible) internal material damage (e.g. delamination, cracks, tunneling …)

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 Modular DAQ with synergy with and contribution from other experiments and projects.

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Modular Acquisition System

14.10.2014

A modular acquisition system is being developed to allow online and offline monitoring of several HiRadMat experiments:

8:1 switch for online acquisition 72 fast channels (strain

gages, LDV) 40 PT100 4 Fibre Optic Sensors (FOS)

Flash system for wider range of applications

to be used together with high speed cameras Non-destructive testing

(Ultrasounds)

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MultiMat Post Irradiation Plan

14.10.2014

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).

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An experiment to test a large spectrum of materials for Collimators and other BID (TCDI, TDI …), particularly low-Z is proposed.

This experiment would further extend knowledge on existing materials and acquire fresh, essential information on novel materials being developed.

Synergy with and contributions from several projects and groups.

This experiment largely relies on the experience gathered with HRMT-09 and specially HRMT-14, particularly on advanced Numerical Simulations and complex Data Acquisition Systems.

Design of equipment and infrastructure for Acquisition System is on-going and anticipating needs for a number of experiments. Joining efforts and contributions by several stakeholders is necessary.

Post-irradiation analysis being planned in conjunction with other past experiments.

Experiment is tentatively scheduled for early 2015 (after HRMT-23 and TCSPM prototype manufacturing).

Conclusions

14.10.2014

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A. Bertarelli – EN-MME 1914.10.2014

Thank you for your attention!Questions?

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HRMT14: High Intensity Tests


Inermet 180, 72 bunches Molybdenum, 72 & 144 bunches Glidcop, 72 bunches (2 x)

Copper-Diamond144 bunches

Molybdenum-Copper-Diamond 144 bunches

Molybdenum-Graphite (3 grades) 144 bunches

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HRMT09 Experiment

14.03.2014 Alessandro Bertarelli – EN-MME 21

Test 1(1 LHC bunch @ 7TeV)

Test 2(Onset of Damage)

Test 3(72 SPS bunches)

~8.5 mm

24 bunches 440 GeV

Good matching between tests and simulations (e.g. groove height)

Impressive quantity of tungsten ejected (partly bonded to the opposite jaw, partly fallen on tank bottom or towards entrance and exit flanges)

Vacuum degraded

Tank contaminated

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HiRadMat Run 1: conclusions


Both experiments wholly successful. In particular, all HRMT14 active systems (DAQ, electronics, mechanics) worked properly in spite of the very harsh environment and the technological challenges.

The experiments confirmed the effectiveness of numerical methods and material models to reliably predict beam-induced damages…

Additional potential machine protection issues were highlighted (UHV degradation; contamination of tank, bellows, vacuum chambers; complication of dismounting procedure)

New damage limits proposed for TCTA and TCTP in line with updated accident scenarios (Annecy ’13 MPP Workshop): Onset of plastic damage : 5x109 p Limit for fragment ejection: 2x1010 p Limit of for 5th axis compensation (with fragment ejection): 1x1011 p

Further interesting results provided by HRMT14: Mo apparently survived beam impact equivalent to 3 bunches @ 7 TeV (1.3 x 1011 p/b);

W specimens seriously damaged by the same impact. Novel composites showed promising robustness up to 6 bunches @ 7 TeV (equivalent).

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EN-KT Day – 07.10.2014 Alessandro Bertarelli - CERN 23

Molybdenum-Graphite Properties

r [g/cm3] 2.5

a (RT to 1000° C) [10-6K-1] <2

a// (RT to 1000° C) [10-6K-1] 12

l (RT) [W/mK] >770

l// (RT) [W/mK] 85

s (RT) [MS/m] 1.1

s// (RT) [MS/m] 0.3

E (Flexural) [GPa] 53

RFl [MPa] 85

Core: 1.1 MS/m

Mo Coating: 18 MS/m

Carbide layer: 1.5 MS/m

• Outstanding RT Thermal Conductivity

• Excellent d

imensional stabilit

y up to 2000°C

• Material can be coated

• Possibility to tailo

r composition to adapt to

specific

needs

• International Patent Filed!

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A. Bertarelli – EN-MME 2414.10.2014

8x

SWIT

CH

72 Fast Channels (Strain gages, LDV)

40 PT100

4 Fiber Optic Sensors (4MHz)

3x PCI-E18 Channels

SSD(3TB)

Microphones

Online Acquisitions

Offline AcquisitionsNon-destructive testing

(Ultrasounds)

MultiMat Modular Acquisition System

Multipurpose flash system for high speed camera

DAQ

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HRMT-23 Advanced instrumentation


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)

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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

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MultiMat Sample Shape Optimization

14.10.2014

D12xL100Longitudinal displacement at r=6 & L=100

D30xL40Longitudinal displacement at r=15 & L=40

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MultiMat Sample Shape Optimization

14.10.2014

D30xL40Longitudinal stress at r=15 & L=20

D12xL100Longitudinal stress at r=6 & L=50

engineering department enen hiradmat proposal 1421: multimat hiradmat scientific board meeting...

Documents

experiments hrmt

bertarelli enmmeoverview

bertarelli enmmelimitations

bertarelli enmme6 inermet

future hiradmat experiments

strain measurements

useful experiments

high intensity tests14