Abstract
Coherent synchrotron radiation may lead to a microwave instability on an electron bunch at wavelengths much smaller than the bunch length. It is possible that ripples (prebunching) on the electron bunch distribution may seed this instability. We report on research exploring this effect using a longitudinally modulated drive laser to generate a modulated electron beam. Our first step is to develop simulations that will help us study the beam generation process using PARMELA. Preliminary experiments on laser beam and electron beam modulation, conducted at the Source Development Laboratory at the National Synchrotron Light Source, show modulation at frequencies in the terahertz regime is attainable. Longitudinal prebunching may enhance the performance of FEL or other radiative devices in the terahertz regime. Alternatively, longitudinal control over the electron beam might be an effective method of suppressing coherent synchrotron radiation instabilities that cause beam break-up.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 498-501 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 507 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Jul 11 2003 |
| Externally published | Yes |
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Keywords
- Electron beam modulation
- Free-electron devices
- Prebunching
ASJC Scopus subject areas
- Instrumentation
- Nuclear and High Energy Physics
Cite this
Electron beam modulation using a laser-driven photocathode. / Neumann, J. G.; O'Shea, P. G.; Demske, D.; Graves, William; Sheehy, B.; Loos, H.; Carr, G. L.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 507, No. 1-2, 11.07.2003, p. 498-501.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electron beam modulation using a laser-driven photocathode
AU - Neumann, J. G.
AU - O'Shea, P. G.
AU - Demske, D.
AU - Graves, William
AU - Sheehy, B.
AU - Loos, H.
AU - Carr, G. L.
PY - 2003/7/11
Y1 - 2003/7/11
N2 - Coherent synchrotron radiation may lead to a microwave instability on an electron bunch at wavelengths much smaller than the bunch length. It is possible that ripples (prebunching) on the electron bunch distribution may seed this instability. We report on research exploring this effect using a longitudinally modulated drive laser to generate a modulated electron beam. Our first step is to develop simulations that will help us study the beam generation process using PARMELA. Preliminary experiments on laser beam and electron beam modulation, conducted at the Source Development Laboratory at the National Synchrotron Light Source, show modulation at frequencies in the terahertz regime is attainable. Longitudinal prebunching may enhance the performance of FEL or other radiative devices in the terahertz regime. Alternatively, longitudinal control over the electron beam might be an effective method of suppressing coherent synchrotron radiation instabilities that cause beam break-up.
AB - Coherent synchrotron radiation may lead to a microwave instability on an electron bunch at wavelengths much smaller than the bunch length. It is possible that ripples (prebunching) on the electron bunch distribution may seed this instability. We report on research exploring this effect using a longitudinally modulated drive laser to generate a modulated electron beam. Our first step is to develop simulations that will help us study the beam generation process using PARMELA. Preliminary experiments on laser beam and electron beam modulation, conducted at the Source Development Laboratory at the National Synchrotron Light Source, show modulation at frequencies in the terahertz regime is attainable. Longitudinal prebunching may enhance the performance of FEL or other radiative devices in the terahertz regime. Alternatively, longitudinal control over the electron beam might be an effective method of suppressing coherent synchrotron radiation instabilities that cause beam break-up.
KW - Electron beam modulation
KW - Free-electron devices
KW - Prebunching
UR - http://www.scopus.com/inward/record.url?scp=0042672594&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0042672594&partnerID=8YFLogxK
U2 - 10.1016/S0168-9002(03)00904-5
DO - 10.1016/S0168-9002(03)00904-5
M3 - Article
AN - SCOPUS:0042672594
VL - 507
SP - 498
EP - 501
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-2
ER -