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CTF3 RESULTS – 1 ST RUN 2004 (7th JUNE – 16th JULY)

CTF3 RESULTS – 1 ST RUN 2004 (7th JUNE – 16th JULY). Outline. Review of planned strategy, schedule and objectives Main results Overview of run history & main problems encountered What has been left out… Highlights on hardware, beam studies and 30 GHz production. 1. 2. 3. 4. 1. 2. 3.

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CTF3 RESULTS – 1 ST RUN 2004 (7th JUNE – 16th JULY)

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  1. CTF3 RESULTS – 1ST RUN 2004 (7th JUNE – 16th JULY) Outline • Review of planned strategy, schedule and objectives • Main results • Overview of run history & main problems encountered • What has been left out… • Highlights on hardware, beam studies and 30 GHz production

  2. 1 2 3 4 1 2 3 4 STAGES • Several “stages” depending on the dump where the beam is sent. • Allows operation in parallel to RF conditioning Need MKS02 & MKS03 Need MKS05 & MKS06 Need MKS11 & MKS12

  3. 1 2 3 4 SCHEDULE RESERVE HB FT RC HB FT RC

  4. CTF3 COMMISSIONING PROGRAM 1st RUN (7th JUNE – 16th JULY) Main Goals: • Commission hardware & software modified since last year ( up to girder 8 ) • Set-up beam transport (power mode) through PETS line • Check 30 GHz power production in PETS line • Commission new hardware (after girder 8) • Nominal beam transport to dump in girder 13

  5. 30 GHz RF POWER PRODUCTION Beam transport in PETS line – final results 18 July 2004 Expected power from current measured before PETS (F=1) Expected power from current measured after PETS (F=1) Measured 30 GHz power

  6. NOMINAL BEAM TO DUMP 13 I [A] x,y [mm] Aug 2003 Nov 2003 July 2004 Nominal current – 3.5 A z [m] z [m] MAGNETIC CHICANE PETS LINE INJECTOR SPECTRO 7 DUMP 13

  7. RUN OVERVIEW 3.3  3 A PETS 2.5 MW Problems with water distribution, leaks etc.. Problems with MKS06 (controls, power supplies, breakdowns…) and with MKS11 (breakdowns) NOMINAL RF in 02,03 0.4  0.2 A PETS NOMINAL BEAM TO DUMP 13 0.4 A , 90% PETS FIRST BEAM MACHINE CLOSED FIRST 30 GHz POWER 1 A , 70% PETS

  8. (Some) activities during RF conditioning • RF pulse compression system: • Signals calibration (MW scale) not yet completed • Remote temperature control ? • RF pulse shaping OK • Magnets: • Check stray fields around gun (solenoids on) OK • Polarity check OK (but not everywhere…) • Others: • Set-up software interlocks OK ? • …

  9. 1 STAGE 1 3 1 6 5 2 4 7 • Modified hardware & software, instrumentation: • Gun pulser timing (short pulse length) NO • BPEs increased bias (avoid charging-up & signal drift) Tried – does not work • MTV 165 CCD camera, Proxitronic control OK , NO • PB1 disconnected OK • BPR 290 ADC calibration, waveguide NO, OK • MTV 440 (spectrometer) OK • Segmented dump in spectro OK • Beam studies: • Beam tranport in solenoid (behaviour of corrector 120, elliptical beam/coupling, beam oscillations) NO

  10. STAGE 2 5 1 4 6 2,3 2,3 7 • Modified hardware & software, instrumentation: • BPR 475 ADC calibration, waveguide NO, OK • WCM 490, WCM 725 (influence of corrector, dep. on position) NO ? • Machine protection system (based on WCMs) First tests • MTV 500 OK • MTV 730 OK • MTV 750 (spectrometer) OK • Segmented dump in spectro OK • Beam studies: • Transverse optics (re-match from last year quad scans, new quads scans in MTV 730, iteration…) Quad scan only • Identify RF crest (beam loading vs. BPR wguides) NO + bunch compression Not full study • Establish PETS pilot beam (200 mA, 200 ns) OK • Establish power mode beam (minimum bunch length) OK (not max 3 GHz power)

  11. STAGE 3 2 3 1 1 1 • New hardware & software, instrumentation: • BPMs 115, 240, 280 OK • BLM system OK • 30 GHz signal acquisition OK • Beam studies: • Set-up dispersion in PETS line (BPMs) OK (qualitative) • Pilot beam momentum optimization (clean transient in chicane, minimize transient from MKS 05 & MKS 06, measure spread in BPM115) Not complete • Pilot beam through PETS OK • Raise current, power mode beam through PETS (monitor vacuum, 30 GHz power, BPMs, BLMs) OK • Beam phase swing for pulse compression NO

  12. STAGE 4 2 ? 1 1 1 1 3 • Modified hardware & software, instrumentation: • BPMs 990, 1090, 1190, 1290 OK • New BLM chambers ? Tested – did not work • Extend automatic steering ? NO • Beam studies: • Transport nominal beam to final dump OK

  13. 28 June 2004 Steering also in solenoidal region AUTOMATIC BEAM STEERING 1

  14. AUTOMATIC BEAM STEERING 2 30 June 2004 Steering also in PETS

  15. RF PULSE COMPRESSION – PHASE PROGRAM

  16. Transient Full beam SEGMENTED BEAM DUMP 16 July 2004 – during quad scan

  17. QDC 705 QFC 710 Reference plane MTV 726 QUAD SCAN - EMITTANCE 16 July 2004

  18. I [A] sY sX with dispersion ( sp = 1% ) Z [m] MAD MODEL RESULTS – PETS LINE Running conditions of 16 July 2004 – before quad scan – E = 43.8 MeV

  19. 30 GHz RF – PETS “CONDITIONING”

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