LINAC3 INSTRUMENTATION STATUS S. Sadovich – 29 Apr 2015 S.Sadovich on behalf of F.Roncarolo 29 Apr 20151.

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Transcription de la présentation:

LINAC3 INSTRUMENTATION STATUS S. Sadovich – 29 Apr 2015 S.Sadovich on behalf of F.Roncarolo 29 Apr 20151

Faraday Cups From Last meeting - Feb 2015Status – 29 Apr 2015 Old Issue: negative peaks (from shower of secondary electrons?)  BI-ML looking into new design (no dates yet) BI-ML design started (for ITL.MFC02 and ITM.MFC01) Next: CST Particle Studio simulations to optimize geometry and repelling voltage Aim (tbc): -- propose new design by summer -- produce new FCs for EYETS New Issue (ITL.MFC02): Sparking with Argon Related to inspection December 2014?  We re-put signal and bias cables as they were before  If you believe there is a bad wiring, we need to open Inspection last week:  Reproduced sparking (with in situ ‘sparks detector’)  found metallized cables  Cables changed and vacuum tested  FC re-installed Do we have expected beam distributions (Ion species and transverse distributions) ?  With this we could simulate Old and New issue No infos received

SEM grids Issue: grid frame sticking into beam pipe aperture when in parking position  Charge collection / beam kick  Potential heating / damage After BI-ML (C.Vuitton) inspection (December 2014): 1. Changer le vérin FESTO course 100mm par un vérin FESTO DNC PPV (amortissement) course 125mm pour gagner 12 à 15mm de course direction « garage ». Remarques: pas nécessaire de changer le vérin d’équilibre AIRAX (course 120mm) ni les 2 soufflets. 2. Réduire l’ouverture du tank en installant une bague avec diam de passage faisceaux de 80mm. Actions : acheter le vérin Festo et fabriquer une ou 2 bagues de réductions. demander un arrêt de 1 jour : retirer le moniteur du LINAC 3. échanger le vérin. réglage des courses. (Nécessité de mettre le moniteur sur un banc d’alignement.) Installer la bague de réduction (diam 80mm) dans le tank. Remonter le moniteur. For the moment modification foreseen for ITL.MSG03, procurment of pieces launched for lab test validation If all ok: LINAC3 in 3 months New Problem: ITF.BSG05 get stuck IN: still under investigation FROM Last meeting (Feb 2015)

PepperPot Saga... BEAM Pepper pot plate MCP, PHOSPHOR Mirror Camera Installed during LINAC3 stop Following tests were performed: Movement with water ON Interlock system

PepperPot Interlock system Interlock output is red: Waterflow is low (measured by flowmeter). MCP is IN and Mask is not in safe position. To be taken into account: Settings of flowmeter are wrong – waterflow is weak to close the contact (will be checked). If cabinet is OFF – there is no signal – Interlock will occur. If pressure is OFF – MCP goes IN – Interlock will occur.

PepperPot SoftWare Issues: Initialization after program is launched – resolved UserFriendly GUI – under investigation: “RealTime” indication during scanning Regrouping of components New possibilities

PepperPot Summary PP is installed SW is more friendly Interlock system is working, but waterflow is not taken into account Cabinet must be ON Pressure must be ON Waterflow ??? Future work: Tests with HV in vacuum Commissioning Tests with beam SW improvement

The End