Mitglied der Helmholtz-Gemeinschaft Status of HESR 18 th

Mitglied der Helmholtz-Gemeinschaft Status of HESR 18 th March 2015 Gießen Dieter Prasuhn

HESR consortium members 18. 03. 2015 Dieter Prasuhn 2

Outline Ø Repetition: The HESR Ø Repetition: Luminosity Ø Status and time schedule of HESR 18. 03. 2015 Dieter Prasuhn 3

HESR for PANDA Kicker Stochastic cooling long. vert. hor. Electron cooler 18. 03. 2015 Ø Circumference 574 m PU Ø Momentum (energy) range 1. 5 to 15 Ge. V/c (0. 8 -14. 1 Ge. V) Ø Injection of (anti-)protons from PANDA CR / RESR at 3. 8 Ge. V/c Ø Maximum dipole field: 1. 7 T p_bar injectionØ Dipole field at injection: 0. 4 T Ø Dipole field ramp: 0. 025 T/s Ø Acceleration rate 0. 2 (Ge. V/c)/s Dieter Prasuhn 4

Mitglied der Helmholtz-Gemeinschaft p-bar production chain in the MSV of FAIR

Antiproton Chain (Modularised Start Version) • acceleration in p-linac to 70 Me. V p-linac SIS 18 SIS 100 • multiturn injection into SIS 18, acceleration to 4 Ge. V • transfer of 4 SIS pulses to SIS 100 • acceleration to 29 Ge. V and extraction of single bunch UNILAC HESR CR • antiproton target and separator for 3 Ge. V antiprotons pbar target/ • collection and 10 s pre-cooling of 108 pseparator bars in the Collector Ring CR • Every 10 s transfer of 108 p-bars at 3 Ge. V to HESR • accumulation and storage of antiprotons in the HESR Dieter Prasuhn 18. 03. 2015 6

The accumulation process in HESR 18. 03. 2015 Dieter Prasuhn 7

Remarks about Luminosity Mitglied der Helmholtz-Gemeinschaft

The intensity in the HESR is now limited to 1010 p-bars due to the cooling and injection efficiency. This means for PANDA: 1. Less intensity (only high resolution mode) 2. Worse duty cycle due to 20 minutes accumulation time 18. 03. 2015 Dieter Prasuhn 9

p = 1. 5 Ge. V/c target thickness = 4*1015 cm-2 1/e-beam lifetime is 2200 s 18. 03. 2015 Dieter Prasuhn 10

p = 15 Ge. V/c target thickness = 4*1015 cm-2 1/e-beam lifetime is 7500 s 18. 03. 2015 Dieter Prasuhn 11

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! 18. 03. 2015 Dieter Prasuhn 12

Status and time line of HESR Mitglied der Helmholtz-Gemeinschaft

HESR Prototyping and Tests with COSY Pellet Target WASA Barrier Bucket Cavity Residual Gas Profile Monitor Stochastic Cooling 2 Me. V e-Cooler 18. 03. 2015 Dieter Prasuhn 14

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 Me. V electron cooler is installed and commissioned in COSY • Beam profile monitor installed in COSY 18. 03. 2015 Dieter Prasuhn 15

Magnets (Tendering by FAIR) 1 st of its kind ready is measured. Series production is released. 2 nd 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 Q 2/2017 18. 03. 2015 Dieter Prasuhn 16

Quadrupoles: 1 st of ist kind is ready and also recently measured Series production is released Delivery of last quadrupole (84) expected Q 2/2016 18. 03. 2015 Dieter Prasuhn 17

Power Converters Quadrupole power converters: 1 st of its kind in house and accepted next 15 Po. Cos passed the FAT The last Quad-Po. Co is expected to be delivered end of Q 2/2015 Dipole test power converter: Is delivered and used by the dipole manufacturer for the measurement of the dipoles The 2 HESR dipole Po. Cos: are specified, but will be ordered matched to the CC schedule 18. 03. 2015 Dieter Prasuhn 18

RF and stochastic cooling First amplifiers have arrived and been tested in Jülich Tanks for stochastic cooling are under construction, 1 st Pickup tank is expected to be ready Q 2/2015, will be installed in COSY for tests 1 st kicker tank is expected to be ready Q 4/2015 and installed in COSY 18. 03. 2015 Dieter Prasuhn 19

Vacuum Stainless steel is in house Ø Vacuum pipes for the dipoles are fabricated Ø First dipole chamber has been delivered to the dipole manufacturer and was mounted into the dipole Ø 1 st 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 Q 2/2015. 18. 03. 2015 Dieter Prasuhn 20

Injection kicker and supply: Design of the manufacturer is accepted, Kicker tank is under construction Test expected Q 2/2015 18. 03. 2015 Dieter Prasuhn 21

Experiment integration 26 mrad deflection PANDA dipole (40 mrad deflection) Chicane dipoles PANDA chicane dipoles and power converters are ordered PANDA solenoid Compensation solenoid Po. Cos ready for FAT 14 mrad deflection 18. 03. 2015 Dieter Prasuhn 22

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 18. 03. 2015 Dieter Prasuhn 23

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 2 nd half of 2018, ready for start of experiments in 2019 18. 03. 2015 Dieter Prasuhn 24

Mitglied der Helmholtz-Gemeinschaft Possible Future Perspectives by the „Senior Leadership team“: Franzke, Angert, Maier (the FAMe-team)

A new idea under discussion for early commissioning of HESR: a direct connection SIS 18 - HESR 18. 03. 2015 Dieter Prasuhn 26

and also p-bars to ESR / Cry-Ring 18. 03. 2015 Dieter Prasuhn 27

Summary • The HESR time line is still un-effected by the Civil Construction timeline Ø We will need storage place for the HESR components • We do not change our efforts, independant of the circulating rumors and discussions. 18. 03. 2015 Dieter Prasuhn 28

Thank you for your attention 18. 03. 2015 Dieter Prasuhn 29