1. the MPD and BM&N projects
Status of
the MPD and BM&N projects
V.Golovatyuk
(VBLHEP)
Session of the MAC for NICA
May 22–23, 2017

2. Outline Motivation Progress in MPD project realization: Status of BM&N
Solenoid and Magnetic Yoke
Status of the 1 stage systems: TPC, TOF, FFD, FHCal
Status of BM&N
Conclusions

3. The general contractor STRABAG (MPD hall in 2018)
NICA Complex
Beams – p,d(h)..197Au79+
Collision energy √s= 4-11 GeV/n
Beam energy (fixed target) GeV/n
Luminosity: 1027 cm-2s-1(Au), 1032 (p)
Experiments:
2 Interaction points – MPD and SPD
Fixed target experiment
MPD
The general contractor STRABAG (MPD hall in 2018)

4. NICA-MPD heavy-ion program
Main properties, EOS
- particle yields & spectra, ratios, femtoscopy, flow
In-Medium modification of hadron properties
- onset of low-mass dilepton enhancement
Deconfinement (chiral) phase transition at high rB
- enhanced strangeness production
QCD Critical Point
- event-by-event fluctuations & correlations
Y-N (hyperon-Nucleon) interactions in dense nuclear matter - hypernuclei
RHIC-BES
NICA
BM&N
QCD matter at NICA :
Highest net baryon density
Energy range covers onset of deconfinement
Complementary to the RHIC/BES, FAIR
and CERN experimental programs
 To study properties of phase diagram it is important
to have possibilities of fine scan on
collision energy;
to have variety of beam nucleus.

5. MultiPurpose Detecor for A+A collisions @ NICA
Hermeticity, 2p acceptance in azimuth
3-D tracking (TPC, ECT)
High resolution vertexing (IT)
Powerful PID (TPC, TOF, ECAL)
- p/K up to 1.5 GeV/c,
- K/p up to 3 GeV/c,
- g, e : 0.1<p<3 GeV/c
Precise event characterization (FHCAL)
Fast timing and triggering (FFD)
Low material budget
High event rate (up to ~ 6 kHz)

6. MPD 1st stage The Physics tasks Bulk properties, EOS - particle yields
& spectra, ratios, femtoscopy, flow
In-Medium modification of hadron properties
QCD Critical Point - event-by-event fluctuations & correlations

7. Schedule of Solenoid activities
MPD superconducting solenoid
B0=0.5 T
weight ~ 900 t
Control Dewar,
pipe lines
TPC region
SC coil
high level (~ 3x10-4) of magnetic
field homogeneity
Trim Coil
ASG superconductors
(Genova, Italy):
Cold Mass + Cryostat
Vacuum System
Trim Coils
Control System
General responsibility
Cryostat
Schedule of Solenoid activities
Manufacture
Finishing Solenoid tests in AGS
Packaging and Transport
Assembly in JINR

8. Estimation of influence of maximum technological deviations accepted by ASG on radial part of magnetic field and integral
6.0
3,0
0,0
-3,0
6.0
3,0
0,0
-3,0
Technological deviations
shift of SC coil in axial direction by 20 mm (towards the magnet pole opposite to the chimney side),
symmetric increase of the distance between poles by 2x5=10 mm
change of the current density along each of the three SC coil modules by 1% (current density increase by 0.5% at the coil end, which approaches the pole and decrease by 0.5% at the opposite coil end).
SC Coil 20mm
5mm
5mm
2D Design model geometry

9. Transport system of MPD
MPD Yoke (L=8970 mm, Ø6625 mm)
28 plates
16 t each
2 support rings
42.5 t each
2 poles
44 t each
Total: 621 t
Material:
Steel 10 (AISI 1010)
forging
Transport system of MPD
Lodgement (Yoke support) – 70 tons, ordinary steel St.3 (Fe 360)
Control Assembling in VHМ Vitkovice (Czech Republic) starts in June-October 2017
MPD building has to be ready in May-June 2018

10. MPD magnet yoke production status
A conception and detailed plan of actions for MPD magnet yoke
manufacturing & test assembling is ready
MPD conception design (Neva-magnet ,St. Peterburg) – finished
Strength calculation (Progresstech,Dubna) – finished
Yoke production (VHM, Vitkovice, Czech Republic) – in progress
Forging (support rings, poles, plates) (SPETSMASH, Kazan) – finished
Main tool for assembly, manipulator (gift from CERN) – in Dubna
Control assembly technology (VBLHEP) – in progress
Forging production
Plates
Support ring

11. Place to control assembling of MPD barrel (September 4 – October 27th 2017)

12. MPD Time Projection Chamber
TDR status: The version is ready for the last evaluation
Assembling tooling: In progress
RoC & Padplanes: Successful production and testing
FEE: Tests of SAMPA chips ongoing
Service systems (gas, cooling): In production
TPC Integration: Progressing
Clean Room Close to be ready
Time Projection chamber (TPC) is the main detector of MPD. It provides the precise measurements of charged particles track

13. RoC chambers preparation
TPC : production of ROC chambers
ROC test procedures:
connectivity tests of pad planes
control of wire positions
counting plateau
dark current
energy resolution (Fe-55)
uniformity of gas gain
setup for ROC tests
Works are going in accordance with the schedule
control of the
wire positions
RoC chambers preparation

14. TPC tooling & service
Tooling for TPC assembly is manufacturing (Briansk, Russia)
clean room input gate
Rack 1
Rack 2
climate control
Purification system test with TPC imitator – DONE
TPC gas system delivery to JINR – spring of 2017

15. MPD TOF
Full-scale mRPC stack
for MPD TOF
TDR status: all recommendation after recent evaluation implemented, ready for further proceeding
Preparation for mass-production : material ordering (mylar, conductive paint, screws,
monofilament line, wires and connectors purchased), equipment installation, personnel
training
TOF readout electronics: in production
TOF assembling area
& cosmic tests zone : in preparation

16. The TOF mass production preparation status
Materials are already bought for
assembling of 50 MRPC (5 mod):
280 μm float glass – 1000
400 μm float glass – 500
Honeycomb panel – 100
PCB with strips – 100
Purchased and planned for 2017 :
280 μm float glass – 4000 (133%)
400 μm float glass – 2000 (133%)
Honeycomb panels – 500 (250 MRPCs)
PCB with strips – 500 (250 MRPCs)
Mylar, conductive paint, screws, monofilament line, wires, connectors are already purchased for the whole TOF system.
Workshop for the TOF detectors mass-production
Workshop staff: 3 physicists, 5 technicians, 2 electronics engineers
Productivity: 1 detectors per day (1 module/2 weeks).
~ 1 year and 2 months to assembling whole TOF system.
Photo of the RPC mounting
Painting
MRPC assembling process
Painting of the conductive layer
TOF module assembling
Control of MRPC quality and uniformity of gaps
Soldering of the signal cables

17. and 80-channel granularity
MPD FFD construction
HV connector
SMA connector
(common pulse
from MCP output)
HDMI connector
& cable
HV div.
MCP-PMT
XP85012/A1-Q
4 quartz bars
Pb 10-mm plate
FEE board
Al housing
FFD module size: × 64 mm2
(28 × 28 × 15 mm)
Black rubber
Optical fiber input
FFD array with 20 modules
and 80-channel granularity

18. Electromagnetic Calorimeter (ECAL) for Multi Purpose Detector (MPD)
Estimated cost of assembling and test of modules of Ecal (Ttsinghua University, Beijing part) is about 9M$.
Barrel ECAL ~ ECAL modules
Prototype of one module

19. FHCAL calorimeter for centrality & event plane determination.
MPD FHCAL : progress in 2016
Ein
Eout
FHCAL calorimeter for centrality
& event plane determination.
TDR status : after detailed evaluation ready to get green light from DAC.
Results of realistic MC performance study are read, MEPhI group is very active
Preparation to mass-production
ongoing

20. Status of FHCAL module production
15x15x110 cm2
According to plans, at the end of this year other 30 (out of 90) FHCAL modules will be assembled and tested.

21. ITS: progress in 2016
CERN & JINR have signed MoU for manufacturing the STS carbon fiber space frames for NICA & MPD) and FAIR
Site for module
assembly
A first stand for in-beam tests of silicon
sensors was put into operation
Automat for DSSD strip-by-strip
QA-tests was put into operation

22. Integration of TPC service
MPD Integration : service, cabling
Integration of TPC service
systems - progressing
ТРС
EСAL
Final design of internal support structures
Finalizing TPC, TOF & ECAL assembling plans
Integration of service systems, cabling, etc..
Drawing of tooling for (dis)assembling MPD
elements and MPD integration

23. area prepared for detector installation
(Baryonic Matter at Nuclotron): the 1st stage
Expression of interest from scientists:
IN, SINP MSU, IHEP + S-Ptr Univ. (RF);
GSI, Frankfurt U., Gissen U. (Germany):
+ CBM-MPD IT-Consortium,
magnet
Physics:
multi strange hyperon and hypernuclei
production
hadron femtoscopy
in-medium effects for strange
& vector mesons in dense barionic matter
electromagnetic probes (with Ecal)
The 1 stage will be accomplished at the end of this year after October November run. The most of the detectors will be installed on the beam line. I mean GEM trackers and TOF detectors. Part of electromagnetic calorimeter ( which was optional) will be ready.
On the second stage after Buster starts operation will be run with ions of gold.
area prepared for detector installation
DCH-1,2
ToF-700
Scint-700
ZDC

24. BM&N Setup

27. Thank you for your attention!
Conclusions
Significant progress achieved in MPD project realization
MPD TDR preparation is going further
Successful preparation for mass-production of MPD elements
(TPC, TOF, FFD, FHCAL)
Integration plan for MPD is ongoing,
the plan is to be ready for work at 2020
BM&N setup is ready to start physics program
in the Nov-Dec 2017 run
MPD Collaboration is continuing to grow: new groups
are very active MPD simulation and analysis
Thank you for your attention!

28. Extra slides