1. Status of the PANDA Solenoid Magnet Production in BINP
PANDA meeting 2017 October E.Pyata

2. PANDA meeting 2017 October 4-7, Darmstadt E.Pyata
PANDA solenoid magnet
The PANDA solenoid is designed to provide a magnetic field of 2 T with a uniformity of ± 2% and radial magnetic field integral in the range 0 to 2 mm over the central tracking region. The magnet is characterized by a warm bore of 1.9 m diameter, a free length of 4 m and 22.4 MJ of stored energy.
Figure 1. Artistic cut side view of the solenoid magnet including contained detector systems.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

3. The main milestones of production of the PANDA solenoid magnet
The scope of delivery includes:
Magnetic and engineering design of the magnet including tools and support;
Production and delivery of the magnet (consisting of yoke, cold mass and cryostat, alignment components, proximity cryogenics, support frame and platform beams) and all tools;
Power converter and quench protection and instrumentation.
Date
Old
New
Start contract
03/2017
Control assembling of the Yoke of solenoid at the BINP site
09/2019
Magnetic tests of the PANDA solenoid including safety system and electrical components at BINP (additional contract)
/2020
07/ /2021
Assembling and tests at the FAIR site
Assembling of the Yoke at Darmstadt
03/2021
11/2021
Acceptant tests at FAIR
08/2022
Installation of the PANDA solenoid magnet at worked position and start final acceptance tests
01/2023
05/2023
Table 1. The main milestones.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

4. The main milestones of the yoke production
Name of milestone
Date 2017/08
Date 2017/10
Memorandum BINP/ plant SibElectroTherm (SET)
05/2017
Presentation design of the yoke after technological work of drawings in FAIR
20-25/07/2017
PDR of the yoke
25-29/09/2017
04-07/10/2017
FDR of the yoke
11/2017
20-25/11/2017
Contract with SibMash (SET)
10/2017
Purchasing raw materials (BINP responsibility, 600 t/360 kEuro)
02/2018
Delivery raw material to SibMash (SET)
01/2018
06/2018
Start of production
12/2017
Production of the first barrel octant
03/2018
04/2018
Production of the all barrel octants
11/2018
12/2018
Production of the frame and beams
Production of the doors
03/2019
Control assembling at SET
04/2019
Finalization of the parts
05/2019
Assembling of the Yoke at BINP
09/2019
Table 2. The main milestones of the yoke production.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

5. BINP ? The yoke production SibMash (SET) Straight contract Design
67 kEuro cost Design work end September
Straight contract Design
SEP ?
Tender
Winner ?
Straight contract Design and Production
Metall producer company/ies
Time about 3 months
SibMash (SET)
1st delivery
2nd delivery
3rd delivery
4th delivery
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

6. Figure 1. Process Flow Diagram of the PANDA cryogenic system.
PANDA solenoid 2017, TDR Flowscheme
The Process Flow Diagram (PFD) of the PANDA cryogenic system proposed by Udo Wagner (CERN) is shown in Fig 2. The main components of the cryogenic system are:
1. the cryostat, which includes:
• the superconducting coil cooled indirectly via the thermal contact with the aluminum support cylinder;
• thermal shields cooled by gaseous helium;
• the vacuum vessel;
2. the control dewar, which includes:
• a vessel for liquid helium;
• current leads;
• valves, gauges;
• vacuum shell.
3. a transfer line (Chimney) connecting the vacuum vessels of cryostat and control dewar;
4. transfer lines (TL) connecting refrigerator and control dewar.
Figure 1. Process Flow Diagram of the PANDA cryogenic system.
Flowscheme of the PANDA solenoid was approved.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

7. Figure 3. Modifying design of the cryostat and supports.
CDR of cryostat and Dewar box /2017
Start design work:
Designer: Sergey Pivovarov
Cryostat
Cold mass
Designer: Mikhail Kholopov
Cryogenics and Control Dewar
Designer: ???
Cryogenics for tests in BINP – 4 week
41 week
41 week
Figure 3. Modifying design of the cryostat and supports.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

8. Figure 4. Longitudinal section of the cryostat with cold mass.
PANDA solenoid 2017, cold mass
The PANDA solenoid is designed to provide a magnetic field of 2 T over a length of about 4 m in a bore of 1.9 m.
The solenoid is split in 3 inter-connected coils. A view of the Target Spectrometer, including the magnet is shown in Figure 1. Each coil is a six layers solenoid enclosed in a coil casing to rigidly contain the internal forces exerted on the conductors due to the magnetic field. The coils and the coil casing constitute the cold mass, which must be maintained at liquid helium temperature (~ 4.2 K) in order for the winding to be in the superconducting state. The cooling of the cold mass is achieved indirectly through the circulation of liquid helium in pipes welded on the coil casing. The TS solenoid is designed to operate at a current of ~5 kA. The conductor is a superconducting NbTi/Cu wire based Rutherford cable co-extruded in a high purity aluminum stabilizing matrix, featuring high electrical and thermal conductivity. The production design and contractual follow-up of the construction of the cold mass including the conductor manufacturing, its integration into the cryostat and test have been committed by the PANDA Collaboration to BINP.
Thickness (after cold work) at 300 K mm
7.93
± 0.03
Width (after cold work) at 300 K
10.95
Critical current (at 4.2 K, 5 T) A
> 14690
Critical current (at 4.5 K, 3 T)
> 16750
Overall Al/Cu/sc ratio
10.5/1.0/1.0
Aluminum RRR (at 4.2 K, 0 T)
> 1000
Al 0.2% yield strength at 300 K
MPa
> 30
Table 4. Conductor mechanical and electrical parameters.
Figure 4. Longitudinal section of the cryostat with cold mass.
Figure 5. Cold mass cross-section.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata
Figure 6. Drawing of the conductor.

9. PANDA meeting 2017 July 20-25 E.Pyata Conductor
PANDA solenoid 2017, Conductor Cost ???
Conductor`s manufacturers
Furukawa, Production of the Rutherford cable: Furukawa, VNIINM,, Bruker…
2. BINP, purchase pure Al 99,998%
problems:
to soft material and cannt to produce a wire 9,5mm
long more 3 m?!
possible purchase bars Ø for Swiss company
Extrusion
BINP manufactured the special tooling to try extrusion
in Saransk plant
? Date to test
Contact with Swiss company – middle of Desember, 2017.
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

10. PANDA meeting 2017 October 4-7, Darmstadt E.Pyata
PANDA solenoid 2017, Power Supply and Energy Extraction System for the PANDA magnet
Responsible person - Dr. Erokhin Alexandr, BINP
Requirements for the external protection system (Quench detection and Energy Extraction):
The amount of the stored energy to be extracted is 22.4MJ. Stored energy should be extracted to the external dump resistor with the value of 0.1 Ohm. The active elements of the dump resistor should not be hotter than 100C.
Power Supply (one VCH1300) – parameters
Nominal output power 61,2kWt;
Nominal output current 5100А;
Nominal output voltage 12V;
8 hours run Stability - < 0.01% from nominal;
Output ripples in voltage:
0-300Hz - < 10mV rms,
0-40кГц – < 100mV rms;
Control Interface – CAN
Form factor 19” x 3U
Conceptual Design Report was presented in FAIR GSI,
FDR /2018
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata

11. Thank you for your attention
PANDA meeting 2017 October 4-7, Darmstadt E.Pyata