We briefly describe in this paper some of the proposed experiments for the E7 and E4 experimental areas at ELI-NP. Our experiments tackle fundamental problems in physics, taking advantage of the unique configuration (high intensity laser plus gamma/electron beam) at ELI-NP in Magurele, Romania. We discuss the gradual approach from a complexity point of view, from “commissioning” or “day 1” experiments to the ones needing key results from the previously proposed ones and R&D advances in fields such as laser wakefield acceleration of electrons, extremely high vacuum or synchronization at tens of femtoseconds level between the pulses. The high repetition rate of the ultra-short laser pulses at E4 is a key factor for the success of the proposed experiment.

1.
The website of ELI-NP
, http://www.eli-np.ro/().
2.
K.
Homma
,
O.
Tesileanu
,
L.
D’Alessi
,
T.
Hasebe
,
A.
Ilderton
,
T.
Moritaka
,
Y.
Nakamiya
,
K.
Seto
, and
Y. X. H.
Utsunomiya
,
Rom. Rep. Phys.
64
, p.
S233
(
2016
).
3.
M. B. e. a. P.
Mohr
,
K.
Vogt
,
Physics Letters B
488
, p.
127
(
2000
).
4.
T.
Tajima
and
J. M.
Dawson
,
Physical Review Letters
43
, p.
267
(
1979
).
5.
C. B. e. a. T.D.
Arber
,
K.
Bennett
,
Plasma Phys. Control. Fusion
57
, p.
113001
(
2015
).
6.
K. A. e. a. S.
Agostinelli
,
J. Allison, Nucl. Inst. Methods A
506
, p.
250
(
2003
).
7.
J. A. e. a. J.
Allison
,
K.
Amako
,
IEEE Transactions on Nuclear Science
53
, p.
270
(
2006
).
8.
Talys website
, www.talys.eu ().
9.
S. H. A.J.
Koning
and
M.
Duijvestijn
,
Proceedings of the International Conference on Nuclear Data for Science and Technology - ND2007
p.
211
(
2008
).
10.
Y.
Fujii
and
K.
Homma
,
Progress of Theoretical Physics
126
,
531
548
(
2011
).
11.
K.
Homma
,
D.
Habbs
, and
T.
Tajima
,
Applied Physics B
160
,
229
240
(
2012
).
12.
K.
Homma
,
Applied Physics B
160
,
229
240
(
2012
).
13.
J.
Larmor
,
Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences
190
, p.
205
(
1897
).
14.
J.
Koga
,
T. Z.
Esirkepov
, and
S. V.
Bulanov
,
Phys. Plasmas
12
, p.
093106
(
2005
).
15.
A. A.
Sokolov
and
I. M.
Ternov
,
Radiation from Relativistic Electrons
(
American Institute of Physics
(translation series),
1986
).
16.
I. V.
Sokolov
,
N. M.
Naumova
, and
J. A.
Nees
,
Physics of Plasmas
18
, p.
093109
(
2011
).
17.
K.
Seto
,
Progress of Theoretical and Experimental Physics
2015
(
2015
), .
18.
K.
Seto
,
S.
Zhang
,
J.
Koga
,
H.
Nagatomo
,
M.
Nakai
, and
K.
Mima
,
Prog. Theor. Exp. Phys
p.
043A01
(
2014
).
19.
L. D.
Landau
and
E. M.
Lifshitz
,
The Classical theory of fields
(
Pergamon
,
New York
,
1994
).
20.
I. V.
Sokolov
,
Journal of Experimental and Theoretical Physics
109
, p.
207
(
2009
).
21.
K.
Seto
, arXiv arXiv:1611.05861 (
2016
).
22.
W.
Heisenberg
and
H.
Euler
,
Z. Physik
98
,
714
732
(
1936
).
23.
J.
Schwinger
,
Phys. Rev.
82
,
664
679
(
1951
).
24.
R.
Karplus
and
M.
Neuman
,
Phys. Rev.
83
,
776
784
Aug (
1951
).
25.
B. D.
Tollis
,
Nuovo Cimento
32
,
757
768
(
1964
).
26.
B. D.
Tollis
,
Nuovo Cimento
35
,
1182
1193
(
1965
).
27.
J. J.
Klein
and
B. P.
Nigam
,
Phys. Rev.
135
,
B1279
B1280
(
1964
).
28.
G.
Zavattini
,
U.
Gastaldi
,
R.
Pengo
,
G.
Ruoso
,
F. D.
Valle
, and
E.
Milotti
,
Int. J. Mod. Phys. A
27
, p.
1260017
(
2012
).
29.
F. Della
Valle
,
E.
Milotti
,
A.
Ejlli
,
G.
Messineo
,
L.
Piemontese
,
G.
Zavattini
,
U.
Gastaldi
,
R.
Pengo
, and
G.
Ruoso
,
Phys. Rev. D
90
, p.
092003
(
2014
).
30.
F. Della
Valle
,
A.
Ejlli
,
U.
Gastaldi
,
G.
Messineo
,
E.
Milotti
,
R.
Pengo
,
G.
Ruoso
, and
G.
Zavattini
,
The European Physical Journal C
76
,
1
15
(
2016
).
31.
G. L. J. A.
Rikken
and
C.
Rizzo
,
Phys. Rev. A
63
, p.
012107
(
2000
).
32.
G. L. J. A.
Rikken
and
C.
Rizzo
,
Phys. Rev. A
67
, p.
015801
(
2003
).
33.
A. N.
Luiten
and
J. C.
Petersen
,
Physics Letters A
330
,
429
434
(
2004
).
34.
A. N.
Luiten
and
J. C.
Petersen
,
Physics Letters A
346
,
385
386
(
2005
).
35.
F.
Moulin
,
D.
Bernard
, and
F.
Amiranoff
,
Z. Phys. C
72
,
607
611
(
1996
).
36.
V.
Dinu
,
T.
Heinzl
,
A.
Ilderton
,
M.
Marklund
, and
G.
Torgrimsson
,
Phys. Rev. D
90
, p.
045025
(
2014
).
37.
V.
Dinu
,
T.
Heinzl
,
A.
Ilderton
,
M.
Marklund
, and
G.
Torgrimsson
,
Phys. Rev. D
89
, p.
125003
(
2014
).
38.
P. J.
Duke
,
Synchrotron radiation: production and properties
(
Oxford Univ. Press
,
UK
,
2000
).
40.
de Jager
 et al.,
The European Physical Journal A - Hadrons and Nuclei
19
, p.
275
(
2004
).
41.
J. D.
Jackson
,
Classical Electro-dynamics
, 3rd Ed. (
John Wiley & Sons
,
1998
).
This content is only available via PDF.