collimation meeting 30.07.2012 tests on a fully assembled tct collimator in the hiradmat facility m....
TRANSCRIPT
![Page 1: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/1.jpg)
Collimation Meeting 30.07.2012
Tests on a Fully Assembled TCT
Collimator in the HiRadMat Facility
M. Cauchi, D. Deboy,on behalf of the Collimation Team
![Page 2: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/2.jpg)
OUTLINE
• Collimation-Related HiRadMat Tests in 2012
• Tests on a Fully Assembled TCT Collimator
Purpose & Type of Tests
Experimental Setup
Beam Parameters to be used
Details of Tests
• Microphones at HRM
Installation Layout
Purpose of Sound Analysis
2Collimation Meeting 30.07.2012
![Page 3: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/3.jpg)
HiRadMat TESTS
Collimation-Related HiRadMat Tests in 2012 to be performed with high intensity beam
• HRMT-09: involving a Phase I Tertiary Collimator (TCTH) (w32: 06/08-10/08)
Motivation: to investigate the robustness of complete collimators in case of beam accidents
• HRMT-14: involving a series of material samples of simple geometrical shape
mounted on a multi-material sample holder (w44: 29/10-02/11)
Motivation: to assess the performances of different materials in extreme conditions
3Collimation Meeting 30.07.2012
![Page 4: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/4.jpg)
TESTS ON TCT COLLIMATOR
Purpose of tests on a fully assembled TCTH collimator
• Verification of robustness and integrity of metallic jaw collimators following direct beam impact
• Benchmarking of simulations
• Assessment of whether a collimator needs to be replaced following an accident during LHC operation
4Collimation Meeting 30.07.2012
![Page 5: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/5.jpg)
TESTS ON TCT COLLIMATOR
TCTH Collimator Jaw
5Collimation Meeting 30.07.2012
• Jaw Material: Tungsten (INERMET 180)
• Support Material: Copper
• Jaw Skrews: Stainless Steel
• Total Length: 1 m + 0.2 m
• Two Jaws enclosed in vacuum tank
• 2 motors per Jaw for position + tilt
• 5th axis for vertical position(max: +/- 10 mm)
![Page 6: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/6.jpg)
TESTS ON TCT COLLIMATOR
Experiment Instrumentation• 5x Stepper motors (with Resolver) : MACCON SM87.2.18MN Z280 ,
2A (LHC collimator type)
• 7x position sensors (LVDT) : Measurement specialties HCA2000 (LHC collimator type)
• 12x End-position switches: SAIA-BURGESS V3FN (LHC collimator type)
• 4x jaws temperature sensors: CAP IT PT100 ceramic sensor (LHC collimator type)
• 2x collimator tank temperature sensors: MINCO S100820PDXK100A Polyimide PT100.
• 2x water temperature sensors: CONDUSTRIE-METAG AG PT100 (LHC collimator type)
• 2x water pressure sensors: SENSORTECHNICS GMBH CTE9000 series (signal 4-20mA)
• 2x vacuum pressure sensors (Piranni / Penning HV) 6Collimation Meeting 30.07.2012
![Page 7: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/7.jpg)
TESTS ON TCT COLLIMATOR
Control Application
7Collimation Meeting 30.07.2012
FESA class and control Application was adopted for the HRM experiment(G. Valentino, A. Masi and Team)
![Page 8: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/8.jpg)
TESTS ON TCT COLLIMATOR
HRM Layout
• TCTH Collimator pre-assembled on experimental table in BA7
• Quick Plug connections similar to LHC collimators
• Installation and Removal remotely with crane
8Collimation Meeting 30.07.2012
Table 1 Table 2TCTH
Table 3
Beam direction
![Page 9: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/9.jpg)
TESTS ON TCT COLLIMATOR
Beam Parameters• Beam-based collimator setup using low-intensity
bunches (pilot bunch with 5 x 109 ppb) – also for integrity check of Jaw surface after Test 1
• Collimator gap equivalent to TCLA gap (smallest gap representing most critical scenario) ~ 3.3mm
• Beam parameters for the irradiation tests: bunches of 0.5mm round beam at collimator jaw entrance face (beam size equivalent to beam size at TCTH location), 1.5 x 1011 ppb intensity, 440GeV
• Impact parameter: 2mm
• Approval of tests by RP (EMDS Document No.: 1211483)
9Collimation Meeting 30.07.2012
![Page 10: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/10.jpg)
TESTS ON TCT COLLIMATOR
Overview on Tests1. Test 1 – Design Error Case: Asynchronous beam dump in
operation or during collimator setup (with 1 nominal LHC bunch).
2. Test 2 – Low-Intensity shot just below damage limit to collect reference data to assess damage thresholds.
3. Test 3 – Disruptive Scenario for asynchronous dump (to be carried out only if it is shown that the results from Test 1 are not compromised).
10Collimation Meeting 30.07.2012
![Page 11: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/11.jpg)
TESTS ON TCT COLLIMATOR
Test 1 – Effects of Asynchronous Beam Dump
• Aim: investigate effect of an asynchronous dump involving the direct impact of 1 nominal LHC bunch on 1 collimator jaw
• A shot with about 20 high intensity HiRadMat bunches (1.5x1011 ppb at 440GeV) will be performed at jaw entrance face on Jaw 1 (FLUKA simulations by L. Lari confirmed same energy deposition peak)
11Collimation Meeting 30.07.2012
5th axis down10 mm
![Page 12: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/12.jpg)
TESTS ON TCT COLLIMATOR
Test 2 – Reference Shot below Damage Limit
• Aim: Further assessment of the damage threshold of the jaw material.
• Low-intensity shot (3-4 high intensity bunches at 1.5 x 1011 ppb at 440Gev) on Jaw 1
• Such impact will not evoke any beam-induced damage (maximum temperature expected to stay 80% below melting temperature of pure tungsten). Vertical jaw position to upper out-switch.
12Collimation Meeting 30.07.2012
5th axis up10 mm
![Page 13: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/13.jpg)
TESTS ON TCT COLLIMATOR
Test 3 – Disruptive Effects of asynchronous beam dump
• Aim: To benchmark simulation results presented at Chamonix against experimental results
• Simulation results anticipated that 4 LHC bunches (1.3 x 1011 ppb) at 5TeV on a TCT would cause jaw damage together with severe plastic deformations on the cooling pipes
• FLUKA simulations by L. Lari showed we need around 50 bunches with 1.5 x 1011 ppb at 440GeV to be equivalent to this case
• Jaw 1 will be taken out completely for this test.
13Collimation Meeting 30.07.2012
5th axis up10 mm
![Page 14: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/14.jpg)
TESTS ON TCT COLLIMATOR
Summary
14Collimation Meeting 30.07.2012
Test Beam intensity
Test 1 3 x 1012 p
Test 1 ~ 6 x 1011 p
Test 2 7.5 x 1012 p
Post-irradiation Inspection (visible inspection using a
camera)Jaw damage extent
Material projection
Metrology of the jaw
Other visible inspection
Direct MeasurementsVacuum Pressure
Water Pressure
Temperature
Microphone signal
• Further manual analysis after necessary activation cool-down period (t.b.d.)
Beam Parameters
440 GeV Protons
1.5 E11 ppb
0.5 mm x 0.5 mm
![Page 15: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/15.jpg)
TESTS ON TCT COLLIMATOR
Schedule
15Collimation Meeting 30.07.2012
Vacuum and Instrumentation test Pre-Assembly on Experimental table in BA7 Control and Data Logging• Installation in HRM experimental area – W31 (this week)• Tests at HRM – W32• Storage (behind HRM Beam Dump) – W33 for at least 4
months
![Page 16: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/16.jpg)
MICROPHONES AT HRM
Installation Layout
16
• Microphone Up- and Downstream for signal correlation (estimate location of impact)
• BackUp Microphone ca 30m Upstream at PatchRack
• Hydrophone (taken from LHC installation) – Underwater microphone in air, R2E test of sensor
Collimation Meeting 30.07.2012
![Page 17: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/17.jpg)
MICROPHONES AT HRM
Purpose of Sound Analysis
• Can we (roughly) localize Impacts with correlation measures between two or more microphone signals?
• Sound Pressure Level -> Amplitude of pressure wave
• Spectral Components -> Damage/ no damage?
• Investigate limitations of the system (EM noise, R2E)
Application:
Impact detection and localization at LHC collimators!
17Collimation Meeting 30.07.2012
![Page 18: Collimation Meeting 30.07.2012 Tests on a Fully Assembled TCT Collimator in the HiRadMat Facility M. Cauchi, D. Deboy, on behalf of the Collimation Team](https://reader035.vdocuments.net/reader035/viewer/2022062422/56649ed35503460f94be2e6a/html5/thumbnails/18.jpg)
18
REFERENCES
• R. Assmann, A. Bertarelli, A. Rossi, “Requirements for 2012 Tests on Fully Assembled Collimators and on Collimator Material Samples in the HiRadMat Facility”, EDMS No. 1178003, LHC-TC-ES-0004.
• A. Bertarelli et al., “Limits for Beam Induced Damage: Reckless or Too Cautious?”, Proceedings of Chamonix 2011 Workshop on LHC Performance.
Collimation Meeting 30.07.2012