| Paper |
Title |
Page |
| MOPOMS004 |
Optimizing Activation Recipe with Cs, Te, O for GaAs-Based Photocathodes |
628 |
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- J. Bae, M.B. Andorf, I.V. Bazarov, A. Galdi, J.M. Maxson
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
- L. Cultrera
BNL, Upton, New York, USA
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Funding: Department of Energy (DOE) DE-SC0021039.
GaAs-based photocathodes are the most popular electron sources for producing highly spin-polarized electron beams in accelerator physics and condensed matter physics. Spin-polarized photoemission requires activation to achieve Negative Electron Affinity (NEA). Conventional NEA surfaces such as CS-O/NF3 are extremely vacuum sensitive, and this results in rapid QE degradation. In this work, we activated GaAs with various recipes using Cs, Te, and oxygen. We demonstrate NEA activation on GaAs surfaces. Among Cs-Te activated samples, the oxidized sample showed the highest QE and longest lifetime at 780 nm.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOMS004
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| About • |
Received ※ 04 June 2022 — Revised ※ 10 June 2022 — Accepted ※ 17 June 2022 — Issue date ※ 24 June 2022 |
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WEOYGD2 |
Results of the Coherent Electron Cooling Experiment at RHIC |
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- V. Litvinenko
Stony Brook University, Stony Brook, USA
- Z. Altinbas, S.J. Brooks, J.C. Brutus, Z.A. Conway, L. Cultrera, A.J. Curcio, L. DeSanto, A. Di Lieto, K.A. Drees, W. Fischer, M. Gaowei, X. Gu, M. Harvey, T. Hayes, H. Huang, M. Ilardo, P. Inacker, J.P. Jamilkowski, Y.C. Jing, P.K. Kankiya, R. Karl, D. Kayran, J. Kewisch, J. Ma, G.J. Mahler, G.J. Marr, A. Marusic, R.J. Michnoff, M.G. Minty, G. Narayan, L.K. Nguyen, M.C. Paniccia, I. Pinayev, T. Rao, G. Robert-Demolaize, T. Roser, P. Sampson, J. Sandberg, M.P. Sangroula, V. Schoefer, S. Seletskiy, F. Severino, T.C. Shrey, J. Skaritka, L. Smart, A. Sukhanov, R. Than, P. Thieberger, N. Tsoupas, J.E. Tuozzolo, E. Wang, G. Wang, D. Weiss, B.P. Xiao, A. Zaltsman
BNL, Upton, New York, USA
- I. Petrushina
SUNY SB, Stony Brook, New York, USA
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Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
Coherent electron Cooling (CeC) experiment aims on demonstrating cooling during this RHIC run, which will be concluded in April 2022. In this talk we will present results of the CeC experiment with special focus won the use and the control of the broad-band micro-bunching Plasma Cascade Amplifier with bandwidth of 15 THz. We will also discuss connection of this experiment with the developing the CeC cooler for future Electron Ion Collider.
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Slides WEOYGD2 [18.592 MB]
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| THPOMS036 |
HERACLES: A High Average Current Electron Beamline for Lifetime Testing of Novel Photocathodes |
3041 |
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- M.B. Andorf, J. Bae, A.C. Bartnik, I.V. Bazarov, J.M. Maxson
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
- L. Cultrera
BNL, Upton, New York, USA
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Funding: DOE-NP DE-SC0021425 NSF PHY 1549132
We report on the building and commissioning of a high current beamline dedicated to testing novel photocathodes for high current and spin-polarized electron applications. The main features of the beamline are a 200 keV DC electron gun and a beam dump capable of handling 75 kW of beam power. In this report, a Cs3Sb photocathode is used to demonstrate the facilities high current capabilities.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-THPOMS036
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| About • |
Received ※ 08 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 30 June 2022 |
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