novel DIagnostic Techniques for future particle Accelerators: A Marie Curie Initial Training NETwork

Transcription

1 novel Iagnostic Techniques for future particle Accelerators: A Marie Curie Initial Training NETwork Carsten P. Welsch - On behalf of the ITANET Consortium - c.welsch@gsi.de

2 Outline What is ITANET? Network structure Research Training What does it mean to you?

3 A typical Monitor OTR Light Camera Material sciences Thermodynamics Electro-Magnetism Optics Mechanics Electronics Nuclear Physics Multi-disciplinary field!

4 What is ITANET? One of the largest Marie Curie Initial Training Networks ever funded by European Union! unding for 20 fellows (17 ESR and 3 ER) Gives industry an important role! Allows for inter-sectorial collaboration! Recognized importance of beam diagnostics at European level! (in physics top 12, 2007 under extreme competition)

5 The ITANET Consortium Network Participants Associated Partners

6 Including Partners rom Industry

7 Examples from the Research Program XEL CT3 (L)AIR c.welsch@gsi.de

8 The XEL Project

9 Wire Scanners..established for measurements in accelerators. Advantages: Resolution:1 μm Reliable irect

10 Challenge: Heat Load on Wire de dx = 2 2 4π nz e 2m ln 2 2 m ec β 4πε 0 I ec β 2 β 2 ( β ) T max ~ 2000 C T = N C = de dx d' f v d' N rev c p 1 G [ C ] ( NB n ) Bunch Required: Speed of m/s with 1 μm resolution.

11 Why highest Energies? Particle accelerators are indispensable tools to understand nature at smaller and smaller scales. Since the 70ies, most new revelations through colliders. Energy increase by actor ten every 8 years! Hadron-Collider at the energy frontier. Lepton-Collider for precision physics. LHC start in 2008 Consensus for a lepton collider with E cm > 500 GeV to complement the LHC physics.

12 At the Energy rontier??? Wait for the LHC results (~ 2010).

13 Linear Collider: Challenges Measure small very beam size. Linac: σ ~ 1 mm inal ocus: σ ~ 1 nm (!) High beam charge 10 9 / nc/cm 2. Thermal limit for best materials is (C, Be, SiC, ) ~ 10 6 nc/cm 2 New diagnostic concepts required!

14 CT3 - Overview Thermionic gun Linac L CR 2007 Photo injector / laser tests from 2008 UMP UMP UMP ITB 16 m 30 GHz production (PETS line) and test stand TBTS UMP CLEX building in 2006 TBL LIL-ACS TL m 3.0m 3.0m TL2 1.4m LIL-ACS LIL-ACS CALIES probe beam injector UMP

15 CT3: An Ideal Experimental Platform Time-resolved spectroscopy Beam Halo Monitoring Simulation of CR; compare to measurements Beam position monitors ITB instrumention

16 The task: ew-body problem: Interaction with "clean" projectile. Important: - No (or only few) add. reaction channels, - Possibility to control perturbation strength Z/v, - Variation of interaction time between as => fs.?

17 Why Antiprotons? Laser τ 150 as t = fs I W/cm 2

18 Why Antiprotons? Laser Pos. Ions + τ 150 as ominated by capture!

19 Why Antiprotons? Laser Pos. Ions τ 150 as Electrons - Sub energy treshhold! Antiprotons!!!

20 Same Structure? Hydrogen Anti-Hydrogen CPT Invariance ΔE / E

21 Same Weight? Hydrogen Anti-Hydrogen Δ g / g 10 3

22 Present Situation: CERN Target 26 GeV/c p 3.57 GeV/c p p Yield: Stoch. Cooling e - Cooler Experiments

23 Problem: 5 MeV too high for trapping! > 99.9 % of pbars lost in degrader. ~ pbars/shot ASACUSA: RQ- ~ pbars/shot BUT: ΔE/E, ε x,y

24 AIR acility for Antiproton and Ion Research

25 Challenges Antiprotons and Positrons are created at very high energies (GeV). H-atom is a weakly-bound system: E (1s) = GeV eceleration & Cooling necessary!

26 acility for Antiproton and Ion Research 30 MeV kev 300 kev - 20 kev kev -... ev

27 USR - Goals Variable to lowest energies kev ~ 20 kev High luminosity for in-ring experiments Well-defined extracted beams: - Small emittance - Small momentum spread Multi-user operation: - 2 straight sections for in-ring experiments - Slow and fast extraction - Additional beam lines possible Central requirements - Δt ~ 500 nsec for Injection in traps - Δt ~ 2 nsec / 10 4 ions for collision studies T Rev (pbar; 20keV) = 15 μsec Umfang = 30 m 4 mm

28 USR - Challenges Injection E= 20 kev 300 kev Atomic beam + Reaction microscope Vacuum < mbar iagnostics at 4K ions 2 ns C beams e - cooler - Photocathode - ΔE~ 1 mev Quasar.uni-hd.de

29 Training Local training by host Network-wide schools on diagnostic techniques Inter-network exchange of researchers Secondments to partners from industry Training in complementary skills Motivation: ind the ideal Training.

30 Outreach ITANET schools in 03/2009 (London) and 09/2010 (Stockholm) ITANET conferences in 2009 and 2011 (IPAC?!) Mini-Symposia, workshops throughout 4 years Open to external participants.

31 What ITANET means to you ITANET.uni-hd.de Young Researcher Supervisor Join in! Scientist

32 Conclusion Unique opportunity to push our field; evelopments through joint effort between research centers, Universities and the private sector; Innovative approach to training of young researchers; Many events interesting for whole community; Stimulation of research careers in beam diagnostics.