Sodium potassium antimonide photocathodes with Quantum Efficiency (QE) in the range of few percent have been grown, and their photoemission properties are measured. We report the intrinsic emittance and response time of electron bunches extracted from this material. It is possible to recover the QE of an overheated cathode by simple potassium addition, and the cathode is rugged enough to deliver tens of mA of average current with no or minimal degradation.
REFERENCES
1.
A.
Todd
, Nucl. Instrum. Methods Phys. Res. A
557
, 36
–44
(2006
).2.
3.
D. H.
Dowell
, S. Z.
Bethel
, and K. D.
Friddell
, Nucl. Instrum. Methods Phys. Res. A
356
, 167
–176
(1995
).4.
D. H.
Dowell
, I.
Bazarov
, B.
Dunham
, K.
Harkay
, C.
Hernandez-Garcia
, R.
Legg
, H.
Padmore
, T.
Rao
, J.
Smedley
, and W.
Wan
, Nucl. Instrum. Methods Phys. Res. A
622
, 685
–697
(2010
).5.
I. V.
Bazarov
, L.
Cultrera
, A.
Bartnik
, B.
Dunham
, S.
Karkare
, Y.
Li
, X.
Xianghong
, J.
Maxson
, and W.
Roussel
, Appl. Phys. Lett.
98
, 224101
(2011
).6.
L.
Cultrera
, I.
Bazarov
, A.
Bartnik
, B.
Dunham
, S.
Karkare
, R.
Merluzzi
, and M.
Nichols
, Appl. Phys. Lett.
99
, 152110
(2011
).7.
L.
Cultrera
, J.
Maxson
, I.
Bazarov
, S.
Belomestnykh
, J.
Dobbins
, B.
Dunham
, S.
Karkare
, R.
Kaplan
, V.
Kostroun
, Y.
Li
, X.
Liu
, F.
Loehl
, K.
Smolenski
, Z.
Zhao
, D.
Rice
, P.
Quigley
, M.
Tigner
, V.
Veshcherevich
, K.
Finkelstein
, D.
Dale
, and B.
Pichler
, Phys. Rev. ST Accel. Beams
14
, 120101
(2011
).8.
B.
Dunham
, A.
Bartnik
, I.
Bazarov
, L.
Cultrera
, J.
Dobbins
, G.
Hoffstaetter
, B.
Johnson
, R.
Kaplan
, V.
Kostroun
, S.
Karkare
, Y.
Li
, M.
Liepe
, X.
Liu
, F.
Loehl
, J.
Maxson
, P.
Quigley
, J.
Reilly
, D.
Rice
, D.
Sobol
, E.
Smith
, K.
Smolenski
, M.
Tigner
, V.
Veshcherevich
, and Z.
Zhao
, Appl. Phys. Lett.
102
, 034105
(2013
).9.
B.
Dunham
, I.
Bazarov
, S.
Belomestnykh
, M.
Billing
, E.
Chojnacki
, Z.
Conway
, J.
Dobbins
, R.
Ehrlich
, M.
Forster
, S.
Gruner
, G.
Hoffstaetter
, V.
Kostroun
, M.
Liepe
, Y.
Li
, X.
Liu
, D.
Ouzounov
, H.
Padamsee
, D.
Rice
, V.
Shemelin
, C.
Sinclair
, E.
Smith
, K.
Smolenski
, S.
Temnykh
, M.
Tigner
, V.
Veshcherevich
, and T.
Wilksen
, “First tests of the Cornell University ERL injector
,” in XXIV Linear Accelerator Conference, Victoria, British Columbia
(2008
), pp. 688
–692
.10.
B.
Erjavec
, Vacuum
45
, 617
–622
(1994
).11.
R. R.
Mammei
, R.
Suleiman
, J.
Feingold
, P. A.
Adderley
, J.
Clark
, S.
Covert
, J.
Grames
, J.
Hansknecht
, D.
Machie
, M.
Poelker
, T.
Rao
, J.
Smedley
, J.
Walsh
, J. L.
McCarter
, and M.
Ruiz-Osés
, Phys. Rev. ST Accel. Beams
16
, 033401
(2013
).12.
Hamamatsu Photonics K.K.
, Photomultiplier Tubes – Basics and Applications
(Hamamatsu Photonics K.K.
, 2006
).13.
T.
Sato
, Jpn. J. Appl. Phys.
6
, 339
–347
(1967
).14.
D. G.
Fisher
, A. F.
McDonie
, and A. H.
Sommer
, J. Appl. Phys.
45
, 487
–488
(1974
).© 2013 AIP Publishing LLC.
2013
AIP Publishing LLC
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