Abstract
We have investigated quenching phenomena of channeling radiation through positron production from a silicon crystal hit by a single-bunch electron beam with high-bunch charge at the 8-GeV electron/positron injector linac. The crystal axis, 〈1 1 0〉, was aligned to the electron beam with a precise goniometer, and positrons produced in the forward direction with a momentum of 20 MeV/c were detected with a magnetic spectrometer. Positron yields were measured by varying the charge in a bunch with a typical bunch length of ∼10 ps from 0.1 nC to 2 nC. The corresponding instantaneous current density ranged from 0.15 × 104 to 1.2 × 104 A/cm2. The results show that, at these current densities, the positron yield is proportional to the bunch charge within the experimental accuracy, which implies that no non-linear phenomena are observed in channeling radiation.
| Original language | English |
|---|---|
| Pages (from-to) | 142-147 |
| Number of pages | 6 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 252 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Nov 2006 |
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Keywords
- Channeling radiation
- Coherent bremsstrahlung
- Crystal target
- Positron source
- Solid-state plasma
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
Cite this
Experimental study of positron production from a 2.55-mm-thick silicon crystal target using 8-GeV electron beams with high-bunch charges. / Suwada, T.; Furukawa, K.; Kamitani, T.; Satoh, M.; Sugimura, T.; Umemori, K.; Okuno, H.; Hamatsu, R.; Yoshida, K.; Potylitsyn, A. P.; Tropin, I. S.; Chehab, R.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 252, No. 1, 01.11.2006, p. 142-147.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Experimental study of positron production from a 2.55-mm-thick silicon crystal target using 8-GeV electron beams with high-bunch charges
AU - Suwada, T.
AU - Furukawa, K.
AU - Kamitani, T.
AU - Satoh, M.
AU - Sugimura, T.
AU - Umemori, K.
AU - Okuno, H.
AU - Hamatsu, R.
AU - Yoshida, K.
AU - Potylitsyn, A. P.
AU - Tropin, I. S.
AU - Chehab, R.
PY - 2006/11/1
Y1 - 2006/11/1
N2 - We have investigated quenching phenomena of channeling radiation through positron production from a silicon crystal hit by a single-bunch electron beam with high-bunch charge at the 8-GeV electron/positron injector linac. The crystal axis, 〈1 1 0〉, was aligned to the electron beam with a precise goniometer, and positrons produced in the forward direction with a momentum of 20 MeV/c were detected with a magnetic spectrometer. Positron yields were measured by varying the charge in a bunch with a typical bunch length of ∼10 ps from 0.1 nC to 2 nC. The corresponding instantaneous current density ranged from 0.15 × 104 to 1.2 × 104 A/cm2. The results show that, at these current densities, the positron yield is proportional to the bunch charge within the experimental accuracy, which implies that no non-linear phenomena are observed in channeling radiation.
AB - We have investigated quenching phenomena of channeling radiation through positron production from a silicon crystal hit by a single-bunch electron beam with high-bunch charge at the 8-GeV electron/positron injector linac. The crystal axis, 〈1 1 0〉, was aligned to the electron beam with a precise goniometer, and positrons produced in the forward direction with a momentum of 20 MeV/c were detected with a magnetic spectrometer. Positron yields were measured by varying the charge in a bunch with a typical bunch length of ∼10 ps from 0.1 nC to 2 nC. The corresponding instantaneous current density ranged from 0.15 × 104 to 1.2 × 104 A/cm2. The results show that, at these current densities, the positron yield is proportional to the bunch charge within the experimental accuracy, which implies that no non-linear phenomena are observed in channeling radiation.
KW - Channeling radiation
KW - Coherent bremsstrahlung
KW - Crystal target
KW - Positron source
KW - Solid-state plasma
UR - http://www.scopus.com/inward/record.url?scp=33750474091&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750474091&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2006.04.065
DO - 10.1016/j.nimb.2006.04.065
M3 - Article
VL - 252
SP - 142
EP - 147
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 -