Abstract
We present observations of the radiation produced by electrons making multiple passes through thin targets in a betatron. We show the influence of multiple passes on the distribution of electrons and on the angular distribution of bremsstrahlung. Measurements of electron-beam spots and bremsstrahlung distributions have been performed for 15-33 MeV electrons and target thicknesses of 10-5-3.5×10-3 radiation lengths. Estimates of the number of passes were obtained for thin targets by comparing them with 1.3 mm thick W and 1.5 mm thick Cu targets, through which electrons pass only once. The numbers of 33 MeV electron passes observed were 460 for 3 μm Mylar, 200 for 20 μm Be, 171 for 5 μm Cu and 30 for 15 μm Cu foils. The multiple pass effect can be useful in the future for increasing the efficiency of novel X-ray sources, such as transition and parametric radiators.
| Original language | English |
|---|---|
| Pages (from-to) | 3-15 |
| Number of pages | 13 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 173 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2001 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
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Observation of multiple passes of electrons through thin internal targets of a betatron. / Kaplin, V. V.; Uglov, S. R.; Bulaev, O. F.; Goncharov, V. J.; Piestrup, M. A.; Gary, C. K.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 173, No. 1, 01.01.2001, p. 3-15.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Observation of multiple passes of electrons through thin internal targets of a betatron
AU - Kaplin, V. V.
AU - Uglov, S. R.
AU - Bulaev, O. F.
AU - Goncharov, V. J.
AU - Piestrup, M. A.
AU - Gary, C. K.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - We present observations of the radiation produced by electrons making multiple passes through thin targets in a betatron. We show the influence of multiple passes on the distribution of electrons and on the angular distribution of bremsstrahlung. Measurements of electron-beam spots and bremsstrahlung distributions have been performed for 15-33 MeV electrons and target thicknesses of 10-5-3.5×10-3 radiation lengths. Estimates of the number of passes were obtained for thin targets by comparing them with 1.3 mm thick W and 1.5 mm thick Cu targets, through which electrons pass only once. The numbers of 33 MeV electron passes observed were 460 for 3 μm Mylar, 200 for 20 μm Be, 171 for 5 μm Cu and 30 for 15 μm Cu foils. The multiple pass effect can be useful in the future for increasing the efficiency of novel X-ray sources, such as transition and parametric radiators.
AB - We present observations of the radiation produced by electrons making multiple passes through thin targets in a betatron. We show the influence of multiple passes on the distribution of electrons and on the angular distribution of bremsstrahlung. Measurements of electron-beam spots and bremsstrahlung distributions have been performed for 15-33 MeV electrons and target thicknesses of 10-5-3.5×10-3 radiation lengths. Estimates of the number of passes were obtained for thin targets by comparing them with 1.3 mm thick W and 1.5 mm thick Cu targets, through which electrons pass only once. The numbers of 33 MeV electron passes observed were 460 for 3 μm Mylar, 200 for 20 μm Be, 171 for 5 μm Cu and 30 for 15 μm Cu foils. The multiple pass effect can be useful in the future for increasing the efficiency of novel X-ray sources, such as transition and parametric radiators.
UR - http://www.scopus.com/inward/record.url?scp=0035149389&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035149389&partnerID=8YFLogxK
U2 - 10.1016/S0168-583X(00)00251-2
DO - 10.1016/S0168-583X(00)00251-2
M3 - Article
AN - SCOPUS:0035149389
VL - 173
SP - 3
EP - 15
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
IS - 1
ER -