Abstract
Coherent transition radiation (CTR), produced by short electron bunches, is a well-known radiation mechanism which is applied for bunch length monitoring. By analyzing the CTR spectrum it is possible to reconstruct the longitudinal bunch shape. Such a technique is widely used for accelerators with electron beams possessing bunch lengths σz much larger than their transverse beam sizes σx,y (with σx,y,z the rms transverse and longitudinal beam sizes). New developments in the field of accelerator technology allow to produce and accelerate bunches with a duration of less than 1 fs with a "pancake-like" bunch shape, i.e. with σz ll σx,y. Diagnostic schemes of this kind of bunches give rise to interesting effects, for example connected with a transverse asymmetry (σx σy), with a tilting of the bunches (i.e. the bunch axis does not coincide with the velocity direction), and even more. Spectral-angular distributions of coherent backward transition radiation (BTR) were simulated taking into account a possible bunch tilt. It is shown that spectral intensity measurements of coherent BTR emitted in backward direction allow to obtain information about the bunch length.
| Original language | English |
|---|---|
| Article number | C02055 |
| Journal | Journal of Instrumentation |
| Volume | 13 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 27 Feb 2018 |
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Keywords
- beam-intensity monitors
- Beam-line instrumentation (beam position and profile monitors
- bunch length monitors)
- Instrumentation for FEL
ASJC Scopus subject areas
- Instrumentation
- Mathematical Physics
Cite this
Coherent backward transition radiation from sub-fs "pancake-like" bunches as a tool for beam diagnostics. / Kube, G.; Potylitsyn, A. P.
In: Journal of Instrumentation, Vol. 13, No. 2, C02055, 27.02.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Coherent backward transition radiation from sub-fs "pancake-like" bunches as a tool for beam diagnostics
AU - Kube, G.
AU - Potylitsyn, A. P.
PY - 2018/2/27
Y1 - 2018/2/27
N2 - Coherent transition radiation (CTR), produced by short electron bunches, is a well-known radiation mechanism which is applied for bunch length monitoring. By analyzing the CTR spectrum it is possible to reconstruct the longitudinal bunch shape. Such a technique is widely used for accelerators with electron beams possessing bunch lengths σz much larger than their transverse beam sizes σx,y (with σx,y,z the rms transverse and longitudinal beam sizes). New developments in the field of accelerator technology allow to produce and accelerate bunches with a duration of less than 1 fs with a "pancake-like" bunch shape, i.e. with σz ll σx,y. Diagnostic schemes of this kind of bunches give rise to interesting effects, for example connected with a transverse asymmetry (σx σy), with a tilting of the bunches (i.e. the bunch axis does not coincide with the velocity direction), and even more. Spectral-angular distributions of coherent backward transition radiation (BTR) were simulated taking into account a possible bunch tilt. It is shown that spectral intensity measurements of coherent BTR emitted in backward direction allow to obtain information about the bunch length.
AB - Coherent transition radiation (CTR), produced by short electron bunches, is a well-known radiation mechanism which is applied for bunch length monitoring. By analyzing the CTR spectrum it is possible to reconstruct the longitudinal bunch shape. Such a technique is widely used for accelerators with electron beams possessing bunch lengths σz much larger than their transverse beam sizes σx,y (with σx,y,z the rms transverse and longitudinal beam sizes). New developments in the field of accelerator technology allow to produce and accelerate bunches with a duration of less than 1 fs with a "pancake-like" bunch shape, i.e. with σz ll σx,y. Diagnostic schemes of this kind of bunches give rise to interesting effects, for example connected with a transverse asymmetry (σx σy), with a tilting of the bunches (i.e. the bunch axis does not coincide with the velocity direction), and even more. Spectral-angular distributions of coherent backward transition radiation (BTR) were simulated taking into account a possible bunch tilt. It is shown that spectral intensity measurements of coherent BTR emitted in backward direction allow to obtain information about the bunch length.
KW - beam-intensity monitors
KW - Beam-line instrumentation (beam position and profile monitors
KW - bunch length monitors)
KW - Instrumentation for FEL
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UR - http://www.scopus.com/inward/citedby.url?scp=85043582280&partnerID=8YFLogxK
U2 - 10.1088/1748-0221/13/02/C02055
DO - 10.1088/1748-0221/13/02/C02055
M3 - Article
VL - 13
JO - Journal of Instrumentation
JF - Journal of Instrumentation
SN - 1748-0221
IS - 2
M1 - C02055
ER -