Progress report on coatings for SPSU

Slides:

Advertisements

Similar presentations

KEK Update on the status of the electron cloud studies at KEKB Contents Brief review of our studies Updates Clearing electrode Groove structure SEY measurement.

Advertisements

R&D Plan on Clearing Electrode using the KEKB LER Y. Suetsugu and H. Fukuma, KEKB M. Pivi and L. Wang, SLAC at KEK.

Patricia Aguar Bartolomé Institut für Kernphysik, Universität Mainz PSTP 2013 Workshop, Charlottesville 11th September 2013.

11-13/10/2007 ILC BDS Kick-Off Meeting, SLAC, US 1 BDS Vacuum System Dr. Oleg B. Malyshev ASTeC Daresbury Laboratory.

Permanent-magnet helicon sources for etching, coating, and thrust Francis F. Chen, UCLA Low Temperature Plasma Teleseminar, June 14, 2013; originally prepared.

Electron Model Components and Costing C. Johnstone Summary talk, C. Johnstone FFAG04 Oct 12-16, 2004 KEK, Tsukuba, Japan.

F.Brinker, DESY, July 17 st 2008 Injection to Doris and Petra Fitting the detector in the IP-region Radiation issues Beam optic, Target cell Polarisation.

Preliminary results and ideas for the SPS upgrade MDs on LHC beams in 2011 G. Rumolo on behalf of all the MD team (Elena, Thomas, Karel, Christina, Holger,

SPSU Progress on coatings and grooves M.Taborelli -Progress on C based coatings -Progress on rough coatings -Progress on SEY instrument -Grooves.

Vacuum system in the main Linacs C. Garion CERN/TE/VSC CLIC09 workshop, October.

BIAS MAGNETRON SPUTTERING FOR NIOBIUM THIN FILMS

Carbon for SPS, state or the art and scrubbing runs, P.Chiggiato, P.Costa Pinto, P.Cruikshank, J.Ferreira Somoza, H.Neupert, A.Sapountzis, M.Taborelli,

SPS vacuum modification G.Vandoni SPS vacuum modification, 1.

NEW COMMENTS TO ILC BEAM ENERGY MEASUREMENTS BASED ON SYNCHROTRON RADIATION FROM MAGNETIC SPECTROMETER E.Syresin, B. Zalikhanov-DLNP, JINR R. Makarov-MSU.

09/13/20111 Status of high intensity polarized electron gun project at MIT-Bates Evgeni Tsentalovich MIT.

Large Area Microcalorimeters of the Diffuse X-ray Background Sarah Bank Towson University August 5, 2004.

IR summary M. Sullivan Nov. 3, 2011 JLAB MEIC IR workshop.

Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1" for the FAIR project September 26, 2006.

1 Vacuum chambers for LHC LSS TS Workshop 2004 Pedro Costa Pinto TS department, MME group Surface Characterization & Coatings Section.

September 17-21, 2007Workshop on ILC Interaction Region Engineering Design, SLAC IR Vacuum Systems first thoughts Oleg Malyshev ASTeC, STFC Daresbury Laboratory.

Vacuum Devices for accelerator studies Bernard HENRIST CERN TE dept. – Technology Department VSC group – Vacuum Surfaces and Coatings OLAV III Oak Ridge.

LER Workshop, October 11, 2006LER & Transfer Line Lattice Design - J.A. Johnstone1 LHC Accelerator Research Program bnl-fnal-lbnl-slac Introduction The.

Recent Electron-Cloud Mitigation Studies at KEK E-cloud mitigation mini-workshop on November at CERN Kyo Shibata (for KEKB Group)

PHIN Fabrication of a photo-injector for the CTF3 accelerator and for the NEPAL test stand WP 4 of the JRA2 PHIN 1.Status of the construction of RF guns.

SKEKB Mini Work SKEKB Vacuum System – Arc Section – Contents Y.Suetsugu KEKB Vacuum Group 1.Beam Chambers 2.Pumps: Pump, Pressure,

OLAV3 Engineering Integration and installation of experimental beam pipes: the case of LHC 7/8/20111P.Lepeule for VSC group.

Advanced Welding Technique

SPS coating studies 28 February, 2016TE-VSC1 Present situation of the development of e-cloud mitigation methods -MD 2011 results -Carbon coating of dipoles.

Pressure data from SPS MDw35 H.Neupert, M.Taborelli For SPSU, 23/09/2010.

THIN FILMS FOR CLIC ELEMENTS Outline Motivation The role of MME-CCS DB and MB transfer lines Main beam Main beam quadrupoles Other issues conclusions CLIC.

E-cloud Remedies and PS2 vacuum design J.M. Jimenez AT Department – Vacuum Group CARE-HHH-APD BEAM’07 Thursday 04 October Session 2: PS2 E-cloud.

M.Taborelli Outgassing of a-C Aging Differences in SEY and aging Preparation for magnet coating Progress on a-C coatings Ch. Yin-Vallgren, S.Calatroni,

Estimates of residual gas pressure in the LHC Adriana Rossi AT-VAC Workshop on Experimental Conditions and Beam Induced Detector Backgrounds April.

Recent ECLOUD07 Workshop in Daegu, S. Korea (~50 participants) –Highlights: Measurements of the surface Secondary Electron Yield (SEY) of samples inserted.

Performed at Brookhaven National Lab for Fermilab Main Injector Electron Cloud Studies June 2009 Linda Valerio September 11, 2009.

Electron Cloud Studies at DAFNE Theo Demma INFN-LNF Frascati.

11/12/20151 Status of high intensity polarized electron gun project at MIT-Bates Evgeni Tsentalovich MIT.

Pulsed Laser Deposition and Quantum Efficency of Mg films University of Lecce L. Cultrera.

Insertion of 2 MBB with new coated vacuum chambers during technical stop week 35 J. Bauche for the SPSU study group, 24 June 2010.

Carbon film for electron cloud mitigation deposited by PLD.

Status of the electron cloud test-bench in LSS5 G. Arduini SL/OP Crash programme in collaboration with LHC/VAC,SL/AP,SL/BI,SL/MR,SL/MS,SL/OP,…

Recent Studies on Electron Cloud at KEKB 1.EC studies at KEKB 2.Recent results –Clearing Electrode –Groove surface –EC measurement in Q and solenoid field.

SPSU M.Taborelli Results from MD week 45 Views of extracted liners and RF shields M. Taborelli for SPSU team.

Scanning Electron Microscope Eee-Jay Rodriguez. The Structure of the Microscope Inside Outside.

Click to edit Master text styles Second level Third level Fourth level Fifth level 1 CERN European Organization for Nuclear Research Graphic charter Fabienne.

Vacuum Systems for Electron Microscopy Constraints on Specimens Specimens placed in the electron microscope must be able to withstand very high vacuum.

τ- Charm Vacuum System Preliminary

DC Sputtering Disadvantage #1 Low secondary electron yield

INVESTIGATION OF NON-EVAPORABLE GETTER FILMS

Beam Instability in High Energy Hadron Accelerators and its Challenge for SPPC Liu Yu Dong.

HIE-ISOLDE HEBT vacuum system

Progress on coatings and grooves

Surface analysis for CERN: a wish list

Seok-geun Lee, Young-hwa An, Y.S. Hwang

Long Shutdown for the LHC: Vacuum Beam Pipes

Electron Beam Welding Welding Technology/4.3 Electron Beam Welding.

Electron cloud & vacuum pressure observations: 2011 proton run

DC Injector and Space Charge Simulation Status

Follow-up of HL-LHC Annual meeting

New SPS liners: the 2009 spring collection

The situation for the coated magnets and what we learned in the LS1 installation: M.Taborelli, for TE-VSC.

Installation XFEL Tunnel WP 34

etching, coating, and thrust

V. Measurement pressure gauges, flow meters

Proposals of new electron cloud monitor in the PS

Plasma Cleaning Safety Presentation

at Helmholtz-Zentrum Berlin

Measuring 14C concentrations with AMS

Electron Source Configuration

Carlos Hernandez-Garcia Don Bullard February 2, 2017

Presentation transcript:

Progress report on coatings for SPSU Aging of a-C/Zr Degassing for various coating parameters Next liners in SPS Conditioning with electrons A different solution for the magnet coating S.Calatroni, P.Chiggiato, P.Costa Pinto, M.Taborelli, I.Wevers, C.Yin Vallgren Special Guest: G.Rumolo SPSU 18/11/08 M.Taborelli

Improvement with a-C on rough coatings a-C/Zr -advantage: low SEY, less sensitive to aging -disadvantage: it requires 2 subsequent coatings SPSU 18/11/08 M.Taborelli

Degassing rate for different parameters Measured after 1h air exposure and 10h pumping a-C(Ar) a-C(Ne) SEY=1 SEY=0.99 SEY=1.02 SEY=1 1.08 -less porous at low pressure? -effect of bombardment by higher energy neutrals? SPSU 18/11/08 M.Taborelli

Strip detectors in magnets: changes during shutdown Present situation -XSD1: liner with StSt reference -XSD2: liner with a-C (CNe13) -SDneg:liner with NEG -EcEx: electron repeller Next: New StSt for reference Same + long venting New a-C Rough a-C/Zr a-C sample in the SPS-SEY sample position NB: 1) electron repeller should be redesigned; if the new version is ready it will be inserted in EcEx instead of the liner 2) If the aperture in the remaining C-magnet is sufficiently large either the repeller or the additional liner will be put there SPSU 18/11/08 M.Taborelli

Magnet coating -preliminary coating tests with B-field parallel to E-field show low efficiency of deposition: a different voltage configuration on the cathodes will be used to get a component EB Coating of test magnet: -most of the parts from the workshop are ready, ordered UHV components almost ready (Turbo pump, valves) -waiting to displace the magnet in 181(re-arrangement due to repair of the LHC quads), rebuilding the fence around the installation: before end of the year Insertion in SPS of coated magnets: -see presentation of J.Bauche -symmetric configuration of 2 un-coated+2 coated magnets and RF diagnostics -at least 2 magnets to be ready for week 8-11 SPSU 18/11/08 M.Taborelli

Conditioning with electrons Electrons at 500eV, relative SEY measured directly with the irradiation gun, at 500eV by polarizing the sample +/-45V SPSU 18/11/08 M.Taborelli

A different solution for the magnet coating -insert a coated sheet of metal (gutter-like) fixed to the bottom of the chamber (as spot welded…). Corresponds to a half- coated chamber -the advantages would be that: -it can be exchanged -coating is easier for logistics (not on site!) and parameter optimization -calculation of G.Rumolo for the necessary SEY and in future for the necessary width SPSU 18/11/08 M.Taborelli

E-cloud density for half-coated +half uncoated (δmax=1.8) pipe G.Rumolo SPSU 18/11/08 M.Taborelli