but have never been used to study the structure of short-lived radioactive nuclei
DESCRIPTION
But have never been used to study the structure of short-lived radioactive nuclei. a large accelerator complex including a cooler ring and a collider. M. Wakasugi, et al., Nucl. Instr. and Meth. A 532 (2004) 216-233. 42 thin electrodes are stacked every 11 mm. 110 mm. 35 mm. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/1.jpg)
![Page 2: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/2.jpg)
![Page 3: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/3.jpg)
But have never been used to study the structure of short-lived radioactive nuclei.
![Page 4: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/4.jpg)
a large accelerator complexincluding a cooler ring and a collider
![Page 5: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/5.jpg)
M. Wakasugi, et al., Nucl. Instr. and Meth. A 532 (2004) 216-233
Total length 650mmTrapping region 〜 260mm
42 thin electrodes are stacked every 11 mm.
Be(t=1mm) window
110 mm
35 mm
Inside the SCRIT
![Page 6: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/6.jpg)
dd
el
dd
Mfr F0
C(q)2
fr 1
12k1M
sin2 2
k2k1
M: Mass of nucleus
F0C(q)
F0
C(q) = 4 (r) sinqrqr
r20
dr
(r) = 1
2 2rF0
C(q)sin(qr)q0
dr
| Fc(q
) |2
|Fc(
q)|2
Momentum transfer (MeV/c)
![Page 7: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/7.jpg)
20 30 40 50 60 70 801E-16
1E-14
1E-12
1E-10
1E-8
1E-6
1E-4
0.01
1
elas
tic c
ross
sect
ion
(bar
n)
scattering angle (degree)
100 MeV 300 MeV 500 MeV 800 MeV
Energy of e- beam
![Page 8: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/8.jpg)
I. Externally injected ions trapped ?
II. Luminosity can be reached to 1027 s-1cm-2 ?
![Page 9: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/9.jpg)
Those three calorimeters for the energy of scattering electrons
![Page 10: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/10.jpg)
Residual gases
![Page 11: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/11.jpg)
Scattered electron
![Page 12: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/12.jpg)
PRL 100, 164801 (2008)
![Page 13: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/13.jpg)
PRL 102, 102501 (2009)
![Page 14: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/14.jpg)
![Page 15: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/15.jpg)
Non-uniform distribution
![Page 16: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/16.jpg)
40 44 48 52 56 60 64 68 72 760
2
4
6
8
10
12lu
min
osity
(1025
cm-2
s-1)
beamcurrent (mA)
Higher luminosity can be expected with higher beam current.
![Page 17: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/17.jpg)
![Page 18: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/18.jpg)
![Page 19: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/19.jpg)
![Page 20: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/20.jpg)
ions(a)
(c)
(b)
(d)
(e)
SCRIT Longitudinal potential
SCRIT Longitudinal potential
SCRIT Longitudinal potential
SCRIT Longitudinal potential
SCRIT Longitudinal potential
ions
ions trapped
ions
ions
![Page 21: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/21.jpg)
Elastic electron scattering
e
e’
q
0+
0 4 82 6 10r (fm)
c (r
)(fm
-3)x
10-2
4He
12C
16O
40Ca48Ca
208Pb
elastic scatteringcross section is largest (up to medium momentum transfer region)charge density distribution (charge form factor)
beyond mean-square charge radius by IS,muonic X-ray| F
c(q) |
2
|Fc(
q)|2
Momentum transfer (MeV/c)
![Page 22: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/22.jpg)
2 s2 s
Cs ions Cs ionsCs ions
Cycle #1 Cycle #2 Cycle #3 Cycle #4
Total Cycle number is 18 in 2 seconds measurement
110 ms
![Page 23: But have never been used to study the structure of short-lived radioactive nuclei](https://reader036.vdocuments.net/reader036/viewer/2022062816/56816685550346895dda2fb9/html5/thumbnails/23.jpg)