ROGACHEVSKY Oleg ROGACHEVSKY Oleg for MPD collaboration
ISMD 2017 September, 11 2017 Tlaxcala City
Project NICA at the LHEP JINR ISMD 2017 ROGACHEVSKY Oleg - - PowerPoint PPT Presentation
Project NICA at the LHEP JINR ISMD 2017 ROGACHEVSKY Oleg ROGACHEVSKY Oleg September, 11 2017 for MPD collaboration Tlaxcala City NICA complex NICA complex Beams p,d(h).. 197 Au 79+ Experiments: Collision energy s= 4-11 GeV/u
ROGACHEVSKY Oleg ROGACHEVSKY Oleg for MPD collaboration
ISMD 2017 September, 11 2017 Tlaxcala City
2/33
Beams – p,d(h)..197Au79+
Collision energy √s= 4-11 GeV/u (Au), 12-27 (p) Beam energy (fixed target) - 1-6 GeV/u Luminosity: 1027 cm-2s-1(Au), 1032 (p) Experiments: 2 Interaction points – MPD and SPD Fixed target experiment BM@N
N I C A e n e r g y s c a n : MP D 4 < √ s < 1 1 G e V / u B M@ N 2 . 3 < √ s < 3 . 4 G e V / u p , C , …, A u
4/33
Facility SPS RHIC BES II Nuclotron- M NICA SIS/100 (500 ?) LHC Laboratory CERN Geneva BNL Brookhaven JINR Dubna JINR Dubna FAIR GSI Darmstadt CERN Geneva Experiment NA61 SHINE STAR PHENIX BM@N MPD HADES CBM ALICE ATLAS CMS Start of data taking 2011 2020 2015 2021 2020/25 2009 √sNN
4.9 – 17.3
7.7 – 200 < 3.5 4 - 11 2.3 – (4.5) up to 5500 Physics CP & OD CP & OD HDM OD & HDM OD & CP PDM
C P — c r i t i c a l p
n t O D —
s e t
d e c
fj n e me n t , mi x e d p h a s e , 1
s t
d e r p h a s e t r a n s i t i
H D M — h a d r
s i n d e n s e ma t t e r P D M — p r
e r t i e s
d e c
fj n e d ma t t e r √sNN GeV
7/33
T h e s c a l e d v a r i a n c e
t h e mu l t i p l i c i t y d i s t r i b u t i
n e g a t i v e l y c h a r g e d h a d r
s i n t h e p r
e c t i l e h e mi
p h e r e
a r X i v : n u c l
x / 6 1 2 7
H
n v a n i s h i n g
G a z d z i c k i M. G
e n s t e i n M. A c t a . P h y s . P
. , B 3 : 2 7 5 1 9 9 9
8/33
P h y s . R e v . C 8 8 , ( 2 1 3 ) , 1 4 9 2
N u mb e r
c
s t i t u e n t q u a r k s s c a l i n g C h i r a l Ma g n e t i c E fg e c t
Stephen Horvat Quark Matter 2015
H i g h P
T
s u p p r e s s i
9/33
R i d g e e fg e c t
S . J
z a e e , Q u a r k Ma t t e r 2 1 7
10/33
P R L 1 1 2 ( 2 1 4 ) 1 6 2 3 1
R . L a c e y , P R L 1 1 4 , 1 4 2 3 1 ( 2 1 5 )
R
2
t
2 s i d e
− r e fm e c t s t h e l i f e t i me
t h e c
l i s i
fj r e b a l l a n d w a s p r e d i c t e d t
e a c h a ma x i mu m f
c
l i s i
s i n w h i c h a h y d r
y n a mi c fm u i d f
ms a t t e mp e r a t u r e s w h e r e t h e e q u a t i
s t a t e i s s
t e s t .
T h e r a p i d i t y
l
e
t h e n e t p r
d i r e c t e d fm
v
1
, d v
1
/ d y . T h i s q u a n t i t y i s s e n s i t i v e t
a r l y p r e s s u r e g r a d i e n t s i n t h e me d i u m.
11/33 S T A R , P R L 1 1 2 , 3 2 3 2 ( 2 1 4 )
T h e k u r t
i s
t h e e v e n t
y
v e n t d i s t r i b u t i
t h e n e t p r
( i . e . p r
mi n u s a n t i p r
) n u mb e r p e r u n i t
r a p i d i t y , n
ma l i z e d s u c h t h a t P
s s
fm u c t u a t i
s g i v e a v a l u e
1 . I n c e n t r a l c
l i s i
s , p u b l i s h e d r e s u l t s i n a l i mi t e d k i n e ma t i c r a n g e s h
a d r
b e l
t h e P
s s
b a s e l i n e a r
n d √ s
N N
= 2 7 a n d 1 9 . 6 G e V . N e w p r e l i mi n a r y d a t a
e r a l a r g e r p
T
r a n g e , a l t h
g h a t p r e s e n t s t i l l w i t h s u b s t a n t i a l e r r
b a r s , h i n t t h a t t h e n
ma l i z e d k u r t
i s ma y , i n f a c t , r i s e a b
e 1 a t l
e r √ s
N N
, a s e x p e c t e d f r
c r i t i c a l fm u c t u a t i
s . . T h e g r e y b a n d s h
s t h e mu c h r e d u c e d u n c e r t a i n t i e s a n t i c i p a t e d f r
B E S
I i n 2 1 8
1 9 , f
t h e
% mo s t c e n t r a l c
l i s i
s .
12/33
B E S I I B E S I I B E S I
13/33
14/33
15/33
Yu.B. Ivanov, PL B721 (2013) 123 arXiv:1211.2579
3 F D
MP D s i mu l a t i
16/33
P H Y S I C A L R E V I E W C 9 6 , 2 4 9 1 1 ( 2 1 7 )
P i
e mi s s i
t i me s a t t h e p a r t i c l i z a t i
s u r f a c e ( a ) a n d t h e l a s t i n t e r a c t i
s ( b ) i n t h e c e n t e r
s s s y s t e m
c
l i d i n g g
d n u c l e i a t d i fg e r e n t v a l u e s
√ s
N N
.
R a t i
t h e
t a n d s i d e r a d i i ( a ) a n d d i fg e r e n c e
t h e r a d i i s q u a r e d ( b ) a s a f u n c t i
√ s
N N
d e r i v e d f r
t h e S T A R d a t a ( . 1 5 < k T < . 2 5 G e V / c , – 5 % c e n t r a l i t y ) a n d c
a r e d w i t h t h e mo d e l c a l c u l a t i
s u s i n g t h e t w
s . v H L L E + U r Q MD mo d e l
MP D s i mu l a t i
MP D s i mu l a t i
T h e d e p e n d e n c e
T
c h
μ
B
, fj t t e d w i t h t h e G r a n d C a n
i c a l a p p r
c h i n T H E R MU S Mo d e l G r a z y n a O d y n i e c J
4 5 5 ( 2 1 3 ) 1 2 3 7 S T A R E u r . P h y s . J . A ( 2 1 6 ) 5 2 : 3 2 4
MP D s i mu l a t i
19/33
20/33
Outer diameter 6583 mm Length 9010 mm
Weight 727 ton
28 plates 16 T each 2 support rings 42.5 T each 2 poles 50 T each VHM, Vitkovice, Czech republic
21/33
21 21
Item Dimension Length of the TPC 340cm Outer radius of vessel 140cm Inner radius of vessel 27 cm Outer radius of the drift volume 133cm Inner radius of the drift volume 34cm Length of the drift volume 170cm (of each half) HV electrode Membrane at the center of the TPC Electric field strength ~140V/cm; Magnetic field strength 0.5 Tesla Drift gas 90% Ar+10% Methane, Atmospheric
Gas amplification factor ~ 104 Drift velocity 5.45 cm/µs; Drift time < 30µs; Temperature stability < 0.5°C Number of readout chambers 24 (12 per each end-plate) Segmentation in φ 30° Pad size 5x12mm2 and 5x18mm2 Number of pads 95232 Pad raw numbers 53 Pad numbers after zero suppression < 10% Maximal event rate < 7 kHz ( Lum. 1027 ) Electronics shaping time ~180 ns (FWHM) Signal-to-noise ratio 30:1 Signal dynamical range 10 bits Sampling rate 10 MHz Sampling depth 310 time buckets F i e l d c a g e
Me mb r a n e
T P C F l a n g e
22/33
mRPC prototype with a strip
Full scale mRPC prototype with a strip (T1 - T2) for two mRPCs
multigap resistive plate chamber
23/33
b e a m
24/33
ToF-700 DCH-1,2 ZDC ToF-400
25/33
D e u t r
b e a m i n c l i n a t i
a t d i fg e r e n t v a l u e s
ma g n e t i c fj e l d
26/33
27/33
28/33
h e p
x a r X i v : 1 4 8 . 3 9 5 9
29/33
30/33
31/33
33/33
2 GeV 6 GeV 5 GeV 4 GeV
Module assembling at INR Transverse size 15x15 cm2, length~160 cm, weight ~120 kg. 60 lead/scintillator sandwiches. 6 fiber/MAPD 10 MAPDs/module
NA61, CBM, MPD
34/33
π∓ p K
+
MP D r e g i s t e r s
a v e r a g e : ~ 3 8 c h a r g e d p i
s ~ 8 5 p r
s ~ 3 K + i n a n e v e n t ( c e n t r a l A u + A u a
t 8 G e V )
35/33
T P C
P I D : I
i z a t i
l
s ( d E / d x ) S e p a r a t i
: e / h – 1 . 3 . . 3 G e V / c π / K – . 1 . . . 6 G e V / c K / p – . 1 . . 1 . 2 G e V / c
36/33
Low-p cutoff ~ 100 MeV for a 0.5 T magnetic field