1. Status of HESR
18th March Gießen Dieter Prasuhn

2. HESR consortium members
Dieter Prasuhn

3. Outline Repetition: The HESR Repetition: Luminosity
Status and time schedule of HESR
Dieter Prasuhn

4. HESR for PANDA Circumference 574 m Momentum (energy) range
Stochastic cooling
Circumference 574 m
Momentum (energy) range
1.5 to 15 GeV/c ( GeV)
Injection of (anti-)protons from CR / RESR at 3.8 GeV/c
Maximum dipole field: 1.7 T
Dipole field at injection: 0.4 T
Dipole field ramp: T/s
Acceleration rate 0.2 (GeV/c)/s
long.
Kicker
vert. PU
hor.
Electron cooler
PANDA
p_bar injection
Dieter Prasuhn

5. p-bar production chain in the MSV of FAIR

6. (Modularised Start Version) pbar target/ separator
Antiproton Chain
(Modularised Start Version)
acceleration in p-linac to 70 MeV
multiturn injection into SIS18, acceleration to 4 GeV
transfer of 4 SIS pulses to SIS100
acceleration to 29 GeV and extraction of single bunch
antiproton target and separator for 3 GeV antiprotons
collection and 10 s pre-cooling of 108 p-bars in the Collector Ring CR
Every 10 s transfer of 108 p-bars at 3 GeV to HESR
accumulation and storage of antiprotons in the HESR
SIS18
SIS100
p-linac
UNILAC
HESR
pbar target/ separator CR
Dieter Prasuhn

7. The accumulation process in HESR
Dieter Prasuhn

8. Remarks about Luminosity

9. 1010 p-bars The intensity in the HESR is now limited to
due to the cooling and injection efficiency.
This means for PANDA:
Less intensity (only high resolution mode)
Worse duty cycle due to 20 minutes accumulation time
Dieter Prasuhn

10. target thickness = 4*1015 cm-2  1/e-beam lifetime is 2200 s
p = 1.5 GeV/c
target thickness = 4*1015 cm-2
 1/e-beam lifetime is 2200 s
Dieter Prasuhn

11. target thickness = 4*1015 cm-2  1/e-beam lifetime is 7500 s
p = 15 GeV/c
target thickness = 4*1015 cm-2
 1/e-beam lifetime is 7500 s
Dieter Prasuhn

12. Some remarks for the commissioning
We do not expect full intensity of p_bars (108 per CR-bunch) in the beginning
But less than 107 are invisable for the diagnostics!
Dieter Prasuhn

13. Status and time line of HESR

14. HESR Prototyping and Tests with COSY
Pellet Target
WASA
Residual Gas
Profile Monitor
Barrier Bucket Cavity
Stochastic Cooling
2 MeV e-Cooler
Dieter Prasuhn 14

15. First components tested in COSY
HESR Barrier bucket cavity in use in COSY
Stochastic cooling prototype pickup structures tested in COSY
First cooling with these structures was performed at the Nuclotron in Dubna
2 MeV electron cooler is installed and commissioned in COSY
Beam profile monitor installed in COSY
Dieter Prasuhn

16. Magnets (Tendering by FAIR)
1st of its kind ready is measured. Series production is released.
2nd dipole is fabricated, will be delivered to Jülich in April
After that we expect 1 dipole being delivered to Jülich every 2 weeks
Delivery of last dipole (46) expected for Q2/2017
Dieter Prasuhn

17. Delivery of last quadrupole (84) expected Q2/2016
Quadrupoles: 1st of ist kind is ready and also recently measured Series production is released
Delivery of last quadrupole (84) expected Q2/2016
Dieter Prasuhn

18. Power Converters
Quadrupole power converters: 1st of its kind in house and accepted next 15 PoCos passed the FAT The last Quad-PoCo is expected to be delivered end of Q2/2015 Dipole test power converter: Is delivered and used by the dipole manufacturer for the measurement of the dipoles The 2 HESR dipole PoCos: are specified, but will be ordered matched to the CC schedule
Dieter Prasuhn

19. RF and stochastic cooling
First amplifiers have arrived and been tested in Jülich Tanks for stochastic cooling are under construction, 1st Pickup tank is expected to be ready Q2/2015, will be installed in COSY for tests 1st kicker tank is expected to be ready Q4/2015 and installed in COSY
Dieter Prasuhn

20. Vacuum Stainless steel is in house
Vacuum pipes for the dipoles are fabricated
First dipole chamber has been delivered to the dipole manufacturer and was mounted into the dipole
1st dipole vacuum chamber is NEG-coated by GSI and is now going to be vacuum tested in Jülich
The detailled Specs for the slow control will be finished Q2/2015.
Dieter Prasuhn

21. Injection
Injection kicker and supply: Design of the manufacturer is accepted, Kicker tank is under construction Test expected Q2/2015
Dieter Prasuhn

22. Experiment integration
26 mrad deflection
PANDA chicane dipoles and power converters are ordered PoCos ready for FAT
PANDA dipole
(40 mrad deflection)
Chicane
dipoles
PANDA solenoid
Compensation solenoid
14 mrad deflection
Dieter Prasuhn

23. Further In-Kind contributions:
Romania: Sextupoles and steerers: Prototypes of each kind are measured Time schedule for delivery to Jülich is consolidated Power Converters: Prototype is accepted, series production can start
Dieter Prasuhn

24. HESR overall time schedule
All detailed specs are ready and part of the In-Kind contract
We assume the building to be “ready to move in” January 2017
Then installation in the tunnel in 2017,
commissioning without beam beginning of 2018,
commissioning with beam 2nd half of 2018,
ready for start of experiments in 2019
Dieter Prasuhn

25. Possible Future Perspectives
by the „Senior Leadership team“:
Franzke, Angert, Maier
(the FAMe-team)

26. A new idea under discussion for early commissioning of HESR: a direct connection SIS18 - HESR
Dieter Prasuhn

27. and also p-bars to ESR / Cry-Ring
Dieter Prasuhn

28. Summary
The HESR time line is still un-effected by the Civil Construction timeline
We will need storage place for the HESR components
We do not change our efforts, independant of the circulating rumors and discussions.
Dieter Prasuhn

29. Thank you for your attention
Dieter Prasuhn