CERNENMMEMMEDMS 1511281 Données expérimentales Experimental data Sample Oxygen content analysis of 4 different samples Sulphur content analysis in one sample sample nr 4 The experimental analysis was carried out by Evans Analytical Group ID: 787334
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Slide1
EN Division-Materials and MetrologyCERN/EN/MME-MM/EDMS 1511281
Données expérimentales / Experimental data:Sample: Oxygen content analysis of 4 different samples. Sulphur content analysis in one sample (sample nr 4).The experimental analysis was carried out by Evans Analytical Group SAS (EAG, France) at their facilities in94, chemin de la Peyrette31170 Tournefeuille - FRANCE Equipment :LECO TC436 model for the oxygen content analysisEMIA820V for the sulphur content analysis.Redaction / Written by: E. RODRIGUEZ CASTRO – BE/RF-LRFApprouvé par / Accepted by: F. LEAUX - EN/MME-MMExpériences / Testing by: E. RODRIGUEZ CASTRO – BE/RF-LRFSuperviseur / Supervisor: F. LEAUX - EN/MME-MM
Domaine / Field: CLICDate: 18/05/2015N° EDMS / EDMS Nr.: 1511281Requérant / Customer: N. Catalan BE-RFListe de distribution / Distribution list: CLIC-PROD
Oxygen content
analysis
Slide2Background
Previous studies EDMS nr. 1507789 show some features that only appear in 12 mm discs surface (sample 2, as presented in slide nr.2).One hypothesis about the appearance of these features is a hydrogen illness phenomenon which would occur during heat treatment in H2 atmosphere if oxygen content is higher than 5 ppm as requested in “Technical Specification N° 2001 – Ed. 7 – 11.10.2006” (EDMS 790779).Moreover, it was discovered that the various batches of Cu-OFE did not come from the same supplier. Four samples were sent to Evans Analytical Group (EAG) for oxygen content analysis.In addition one of the samples (sample 4) was requested also for the sulphur content.
Slide3Samples
From Ø 85mmbar nr 98Ø 12mmWaveguideS150 Ø 48mm for analysis of oxygen and sulphurSample 1Sample 2Sample 3Sample 4
Slide4Slide5Slide6Slide7Slide8Conclusions
Sample 1, 2 and 4 are below 5ppm of oxygen.Sample 2 have less than 5 ppm of oxygen observed features have no relation with oxygen content.Sample 3 is 22 ppm of oxygen what is more than 4 time the upper limit.In sample 4 the S content was also measured being within tolerance.