1 / 8

EuCARD-2 WP12 HZDR 16-17.04.2014

EuCARD-2 WP12 HZDR 16-17.04.2014. Sub-task 12.5.1: Pb photocathode deposition. Work package 12 – Task 12.5 photocathodes - Subtasks 12.5.1: Pb photocathode deposition & 12.5.2: Diamond a mplifier c athode (DAC) development

hope-gibbs
Télécharger la présentation

EuCARD-2 WP12 HZDR 16-17.04.2014

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EuCARD-2 WP12 HZDR 16-17.04.2014

  2. Sub-task 12.5.1: Pb photocathode deposition Work package 12 – Task 12.5 photocathodes - Subtasks 12.5.1: Pb photocathode deposition & 12.5.2: Diamond amplifier cathode (DAC) development Involved Institues: NCBJ Swierk, DESY Hamburg, HZB Berlin, HZDR Dresden projectstart: May 1, 2013 D12.9 Pb/Nbplugphotocathodemeasurementsandcharacterization. Report detailingtheverificationofPb/Nbplugphotocathodeperformanceatthe HZDR injector test facility

  3. Sub-task 12.5.2: Diamond Amplifier Cathode Development projectstart: May 1, 2013 D12.13 results of DAC implementation in SRF guns: Report detailing the performance verification of DAC photocathode cells at BNL and BESSY-II, defining implementation process into SRF gun structure. Collaboration of HZB and HZDR

  4. ELBE SRF-Gun.2 status SRF Gun.2 will be moved in accelerator hall during the Easter-Shutdown. new cavity old cavity SC solenoid ⇒ Bz,max = 449 mT (@10A) H.Vennekate, DPG2014

  5. Nb-Samples • Made of pure niobium rod, 2-types (puck, plug) • Polishing with diamond suspension, mean roughness 24 nm • Clean with iso-propanol in ultrasonic bath • blow with ionized N2 till particle free, packed in dry N2 Mirror like surface Shipped back after coating Puck form with Ø10mm

  6. Experimental setup Vacuum system: chamber and pumps, gauge, sample holder, anode, feed through, UV optical window Laser system: high intensity UV laser, scanner, power meter/diode measurement instruments: Keithley 6485, DC, power meter Anode cathode Test chamber

  7. UV laser for sample cleaning • UV 258 nm • 100 -500 kHz adjustable • Intensity adjustable, < 0.3 mJ/cm2 • High power cleaning • Low power for QE measurement Intensity profile of the UV output [I.Will, FEL06] Two channel laser for ELBE SRF Gun

  8. Plan of experiments 1. cleaning with high intensity UV laser 2. QE measurement 3. field emission measurement in HZB

More Related