Nb-Pb Superconducting RF Gun

Sekutowicz, J.; Iversen, J.; Kreps, Gary L.; Möller, W.-D.; Singer, W.; Singer, X.; Desy,; Ben‐Zvi, I.; Burrill, A.; Smedley, J.; Rao, T.; Ferrario, M.; Frascati,; Kneisel, P.; Lab, Jefferson; Langner, J.; Strzyżewski, P.; Lefferts, R.; Lipski, A.; Szałowski, K.; Lodz, U; Ko, K.; Xiao, Liling

doi:10.2172/878351

Cited by 9 publications

(13 citation statements)

References 15 publications

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“…The niobium cathode proposed and tested at BNL [6] demonstrates rather poor QE. A complementary approach with lead [7] is discussed in the following section.…”

Section: Motivationmentioning

confidence: 99%

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Status of Nb-Pb superconducting RF-GUN cavities

Sekutowicz

Iversen

Klinke

et al. 2007

2007 IEEE Particle Accelerator Conference (PAC)

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We report on the progress and status of an electron RFgun * made of two superconductors: niobium and lead [1]. The presented design combines the advantages of the RF performance of bulk niobium superconducting cavities and the reasonably high quantum efficiency of lead. The design of RF-gun and performance of 3 test cavities without and with the emitting lead spot are reported in this contribution. Measured quantum efficiency for lead at 2K is presented briefly. More details are reported in [9].

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“…The niobium cathode proposed and tested at BNL [6] demonstrates rather poor QE. A complementary approach with lead [7] is discussed in the following section.…”

Section: Motivationmentioning

confidence: 99%

“…

AbstractWe report on the progress and status of an electron RFgun * made of two superconductors: niobium and lead [1]. The presented design combines the advantages of the RF performance of bulk niobium superconducting cavities and the reasonably high quantum efficiency of lead.

…”

mentioning

confidence: 99%

Status of Nb-Pb superconducting RF-GUN cavities

Sekutowicz

Iversen

Klinke

et al. 2007

2007 IEEE Particle Accelerator Conference (PAC)

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“…Fig.18. Results of the SIMS analysis of a Pb-film sample, which was deposited within the UHV arc facility equipped with a truncated-cone cathode [12]. In order to perform the surface quality inspection of the deposited Pb layers the use was made of SEM techniques.…”

Section: B Recent Depositions By Means Of the Uhv Arc Facility With mentioning

confidence: 99%

“…In order to compare the vacuum-arc deposited Pb photo-cathodes with those obtained with other techniques, a special experimental setup for Quantum Efficiency (QE) measurements was prepared at the BNL in USA [12]. The investigated samples were illuminated with KrF Excimer, ArF Excimer, and Nd:YAG (4th harmonic) laser pulses.…”

Section: B Recent Depositions By Means Of the Uhv Arc Facility With mentioning

confidence: 99%

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Deposition of Thin Metal Films by Means of Arc Discharges under Ultra-High Vacuum Conditions

Sadowski

Strzyżewski

Nietubyć

2007

EUROCON 2007 - The International Conference on "Computer as a Tool"

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The paper reports on plasma technology of the production of thin metal layers by means of controlled arc discharges, initiated at ultra-high vacuum (UHV) conditions, i.e. at the background pressure < 10 -8Pa, and carried out at the operating pressure < 10 -5Pa. Different UHV arc facilities, which have been designed and operated at IPJ in Swierk, are described. The UHV arc facility equipped with a cylindrical cathode made of a pure niobium (Nb) is applied for the deposition of superconducting Nb layers upon inner surfaces of RF accelerator cavities. The UHV arc device equipped with a truncated-cone cathode made of pure lead (Pb) is used for the formation of photo-cathodes in RF electron guns. Filtering systems, which are used to reduce an amount of metal micro-droplets, are described. Characteristics of the deposited samples show that very pure and smooth metal films of the bulk-like crystalline structure can be produced by means of the described technique. Abstract -The paper reports on plasma technology of the production of thin metal layers by means of controlled arc discharges, initiated at ultra-high vacuum (UHV) conditions, i.e. at the background pressure < 10 -8 Pa, and carried out at the operating pressure < 10 -5 Pa. Different UHV arc facilities, which have been designed and operated at IPJ in Swierk, are described. The UHV arc facility equipped with a cylindrical cathode made of a pure niobium (Nb) is applied for the deposition of superconducting Nb layers upon inner surfaces of RF accelerator cavities. The UHV arc device equipped with a truncated-cone cathode made of pure lead (Pb) is used for the formation of photocathodes in RF electron guns. Filtering systems, which are used to reduce an amount of metal micro-droplets, are described. Characteristics of the deposited samples show that very pure and smooth metal films of the bulk-like crystalline structure can be produced by means of the described technique.

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