Review Meeting on on the TESLA Test Facility Phase 2 Summary Hans Weise for the Meeting Participants Hans Weise
Hans Weise
250 kv thermionic gun TTF1 - Some Historical Remarks 4 accelerator modules beam dump Hans Weise Status 4/94
Spring 1994 First 250 kev beam on 02.04.96 First discussions about the TTF FEL Hans Weise
Hans Weise 02.06.97
Common effort of almost all laboratories using s.c. accelerating cavities, e.g. (CERN), Cornell, DESY, INFN, (KEK), Saclay, TJNL 40 partners from 11 countries More than 75 cavities with gradients up to 35 MV/m Hans Weise
Hans Weise
Hans Weise
22.02.00 First lasing of the TTF FEL Hans Weise
The TTF Linac was operated 7 days per week, 24 hours. Approx. 50% of the time was allocated to FEL operation including a large percentage of user time. The FEL requires very stable beam conditions. In its different set-ups, approx. 13,000 hours beamtime were achieved since 1997. Based on the TTF experience several FELs using superconducting accelerator technology are proposed. Beam uptime and operational uptime (users or acc.studies) DOWN 8% OFF 6% DOWN 6% OFF 8% USERS 0% 100% 80% 60% TUNING 19% STUDIES 4% USERS 63% TUNING 25% STUDIES 61% 40% week 3 / 2002 week 7 / 2002 20% 2001 2002 FEL User Operation Accelerator Studies 35 40 45 50 5 10 week Hans Weise
e - beam BC2 BC3 RF-GUN ACC1 ACC2 ACC3 ACC4 ACC5 a new RF Gun a new injector concept Injector 3 three new accelerator modules ACC3 to ACC5 (3*, 4, 5) and later this year another two ACC1 and ACC2 (2*, 1*) another bunch compressor BC3 BYPASS ACC6 ACC7 SEED UNDULATOR DUMP COLLIMATOR new beamlines a new collimator concept a long undulator more than 150 m transv. and energy collim. 6 modules, 30 m Hans Weise a long bypass and a spectrometer line
e - beam BC2 BC3 RF-GUN ACC1 ACC2 ACC3 ACC4 ACC5 BYPASS ACC6 ACC7 SEED UNDULATOR DUMP COLLIMATOR And again... Common effort of almost all laboratories using s.c. accelerating cavities, e.g. (CERN), Cornell, DESY, INFN, (KEK), Saclay, TJNL 40 partners from 11 countries Finally we ll have 48 s.c. cavities at TTF2. This is a great test facility for both the X-FEL and the TESLA LC. Hans Weise
Hans Weise
Schematic overview of the TTF Injector III ~38 Klaus Flöttmann
The gun section 2 BPM BPM FC Klaus Flöttmann
The 3 rd harmonic section FNAL Design Klaus Flöttmann
Injector III - Status of Engineering Design Detailed view of DBC2 section concrete base Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section Example: typical detail of DBC2-section suppport structures Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section Example: typical detail of DBC2-section Quads and BPMs Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section Example: typical detail of DBC2-section OTR and wire-scanner Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section Example: typical detail of DBC2-section vaccum and diagnostics Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section bellows etc. Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section steerers Anette Brenger
Injector III - Status of Engineering Design Detailed view of DBC2 section OTR lens holders Anette Brenger
Anette Brenger Injector III - Status of Engineering Design COMPONENTS ON CRITICAL PATH (perhaps...)
large extension of the facility and its research program with two main goals: study the emittance conservation principle extensive R&D on photo injectors Anne Oppelt
Gun Booster masks transverse emittance quads longitudinal phase space and BPMs, screens, streak camera, Anne Oppelt
Siegfried Schreiber Short Pulse Oscillator Prototype for PITZ
Siegfried Schreiber
Siegfried Schreiber
Anne Oppelt Design by INR Troitsk based on PPA for TESLA
de/e low energy tra jectory center energy trajectory high energy trajectory s incoming long. phase space s = -R56*δ Thorsten Limberg
Thorsten Limberg
BC-3 Layout R56: 0.025-0.1 mm Thorsten Limberg
Thorsten Limberg BC-3 Layout Incoming optics matching section
Thorsten Limberg BC-3 Layout First half of S-bend
Thorsten Limberg BC-3 Layout 2nd part of S-bend
Thorsten Limberg BC-3 Layout Outgoing optics matching section
ACC 6 ACC 5 ACC 4 ACC 3 ACC 2 ACC 1 RF-Gun 2 MW > 2 MW ~ 4 MW ~4 MW ~1 MW Mod 4 (10 MW) 2 x 3 MW Mod 1 (5 MW) Mod 2 (5 MW) Mod 3 (5 MW) Mod 5 (5 MW) nur für Testzwecke Φ-Längenausgleich Mod 6 (10 MW) 3-dB-Hybrid Reserve, assembly in Spring 03 φ Phasenschieber 5 MW, φ>20 Michael Ebert
Michael Ebert Waveguide Assembly
Michael Ebert Status of Klystron / Modulator 4 & 5
Gradient [MV/m] 30 25 20 15 10 5 0 Cavities and Modules module gradients 1 2 3 1* 4 5 Cavity Test (Vertical) Q >=1e10 Stable Module RF Operation Stable Beam Operation Max. Gradient with Beam module 1* problems 60 problem counts 50 Problem count # 40 30 20 10 0 2 3 1* 4 5 Lutz Lilje
Lutz Lilje Accumulated more than 13000 hours of operation Operation of modules very flexible with a variety operating gradients Typical FEL average operation gradient was around 14-17 MV/m Maximum average gradient with beam was 22,4 MV/m in M3 Stable operating gradient around 20-21 MV/m in M3 and M1*
Valeri Ayvazyan ACC Operation - Phase Adjustment
Valeri Ayvazyan ACC Operation - Exception Handling
Stefan Simrock
Stefan Simrock
Stefan Simrock
Stefan Simrock
Stefan Simrock
Beam Diagnostics using a Transverse Deflecting Cavity Karsten Klose Marc Ross
Markus Körfer FEL Bypass
Material Test Facility in the FEL Bypass T. Wohlenberg Mike Seidel
Collimator Section Steerer Beam Toroid Dark Current OTR-Wire Dipole Collimator Kicker Quad+BPM MATCH ECOL TCOL Markus Körfer
Hardware for the Collimator Section Collimators Magnets BPMs Kicker Cornelius Martens
Kicker Development conductor with a perimeter of 83mm conductor with a perimeter of 59mm conductor with a perimeter of 59mm and with a hole conductor with a perimeter of 20mm the magnetic field voltage with a Kicker Impedance of 50Ω 225mV 281mV 284mV 540mV the maximum of the magnetic field was achieved with a minimum distance between conductor and chamber 309mV 378mV 284mV 540mV Remark: The measurement was done with only one conductor (no pair) We have a reduction by the sputtered chamber of 3% Frank Obier
Joachim Pflüger TTF2 Undulator
Undulator Vacuum System chamber support steerer beam pick up BPM Ulrich Hahn
Ulrich Hahn Undulator Vacuum Chambers
Undulator Vacuum System Diagnostic Block Ion pump wirescanne r quadrupole stretched wire position control system beam granite baseplate quadrupole alignment system Ulrich Hahn
Undulator Vacuum System Diagnostic Block pick up BPM wirescanner Wirescanner Slit quadrupole beam pipe quadrupole pump port Ulrich Hahn
FIR Undulator at the TTF FEL Type: planar, electromagnetic Number of poles 10 Period length 40 cm Total length 430 cm Peak magnetic field 0-1.2 T Mikhail Yurkov
Michael Schmitz Spectrometer and Dump Section
D: Status (3) D: Status (3) associated with ext. costs not yet approved Rough Schedule, Status:Jan03 Section: TTF2-DUMP, JAN 03 FEB 03 MAR 03 APR 03 MAY 03 JUN 03 JUL 03 SUPPORTS Region D1Dump to D6Dump Diagnostics Region! Q10&Q11Dump Region RD13Dump to Exit Window construction manufacturing install in tunnel construction manufacturing install in tunnel construction manufacturing install in tunnel install in tunnel MAGNETS B-measurements install chamber (see chamber) install in tunnel align survey. marks VACUUMCHAMBERS (except Diagn.) for TDC manufacturing clean & vac. test for Q10&Q11Dump for Q4Dump and RD13Dump remaining chambers deinstal clean & vac. test manufacturing manufacturing Exit Window manufacturing 1. window clean & vac. test clean & vac. test clean & vac. test DIAGNOSTICS OTR (Screen/9Dump) chamber mover & screen? optical system? Stripline BPM (BPM/9Dump) Button BPM's (BPM/5&15Dump) Toroid, (Toroid/8Dump)? SEM, (Sem/8Dump)? clean & vac. test clean & vac. test manufacturing clean & vac. test Michael Schmitz
photon diagnostics Photon Beam Transport gas absorber photon diagnostics beam dump FEL hall PETRA tunnel LINAC tunnel Kai Tiedtke
Photon Beam Transport diagnostic unit 2 + mirror chamber diagnostic unit 1 + octopus beam dump spectrometer mirror chamber Kai Tiedtke
Equivalent Dose due to Electromagnetic Radiation 800 600 400 200 0-200 -400-600 FLUKA Symulations done by Albrecht Leuschner Beam loss in the undulator -2000-1000 0 1000 2000 3000 800 600 400 200 0-200 -400-600 Beam loss behind the undulator -2000-1000 0 1000 2000 3000 Sv Kai Tiedtke
Photon Beam Diagnostics MCP Diagn. A. Fateev et al., Dubna Faraday cup Drift tube Ions Gas Ionization Detector 10-9 hpa 10-5 hpa e - hν Collaboration with PTB, Berlin, and Ioffe Institute, St. Petersburg Differential pumping Interaction volume R. Treusch
Photon Beam Diagnostics TTF1 Experience Double slit diffraction pattern (R. Ischebeck) Short pulse ( 100fs) Long pulse (200fs) Single Shot Spectra R. Treusch
Beam Time for Users Total beamtime requested: 98 weeks for 2004 ( only one shift per day?) Two shifts per day: 49 weeks for 2004 Technical projects: 6 weeks A1 and A2 rated groups: 22 weeks 12 projects 14 12 10 8 6 4 2 0 7 14 21 28 days Length of stay projects 10 8 6 4 2 Ranking Beamtime distribution for 2004: A1 groups: 2 weeks each with 1 shift per day A2 groups: 1 week each with 1 shift per day 0 A1 A2 A3 B C evaluation E. Plönjes => total of 9 weeks of user beam time for 2004
THE Photon Beam 8 needed energy change 10 8 needed intensity variation projects 6 4 projects 6 4 2 2 0 no change sometimes 1-2 times once more often per day per hour 7 projects 6 5 4 3 2 1 pulse length projects 0 10 8 6 4 2 no 1-100% sev. orders attenuator defocusing of magnitude or attenuator desired pulse rate desired pulse rate maximum pulse rate maximum pulse rate 0 E. Plönjes < 50 fs 100-500 fs 0 single 1-10 Hz >1 KHz 10Hz 1-100 KHz 1 Hz 10-100 Hz <50 Hz
TTF Linac Schedule HOM + mod. 1* TTF2 FEL commissioning RF test mod.3*,4,5 Nov. Dec.02 Jan.03 Feb.03 March April May June July 03 HERA shutdown P. Castro
beam RF-GUN TTF Linac Schedule BC2 BC3 ACC1 ACC2 ACC3 ACC4 ACC5 w29 (July) w12 (March) w22 (May) w12 (March) ACC6 w9 (Feb.) P. Castro ACC7 w28 (July) COLLIMATOR w24 (June) BYPASS SEED w14 (March) w27 (July) UNDULATOR CONTAINERS: w28 (July) w25 (June) DUMP w25 (June)
Commiss. RF gun (in Zeuthen) TTF Linac Commissioing Installation Commiss. klystron 4 RF test of modules in ACC3, 4 and 5 Installation Commiss. klystron 5 -----------------------------(New) Personal interlock test------------------------------- Commiss. magnet power supplies Commissionin g gun RF Commiss. laser beam line Beam commiss. of gun Commissioning RF Beam commiss. of injector Beam commiss. of linac (using bypass) Beam commiss. of undulator beam line P. Castro
TTF FEL Commissioning Tentative time schedule How fast do we obtain first lasing? How many problems do we have with hardware How close do we want to get to machine limits Availability of experts 1. First lasing: 3 months 2. Full wavelength range: 3 months (what limits) 3. Full pulse length: 2 months 4. 10 Hz: 1 month Steps 3 & 4 have to be performed over the entire wavelength range After each milestone there are user experiments that can be performed (several weeks after each milestone?) B. Faatz
Stripline BPM TTF Linac Diagnostics BPM Electronics Wire Scanner OTR Button BPM Toroid M. Wendt
TTF FEL Control System Architecture K. Rehlich
800 DAC channels (9 MHz sampl.) for TTF2 data flow can be up to 50% of a HEP experiment!!! K. Rehlich
K. Rehlich Data Aquisition at TTF2
M. Staack Machine Protection System
Remote Operation at TTF2 Hamburg Home, Office Milano, Roma Paris Chicago B erlin TTF BKR INFN Saclay Orsay Fermilab A0 PITZ TTF DESY (Hamburg) A0 Fermilab PITZ DESY (Berlin) R. Kammering
Hans Weise THANKS!!!!!!!!!!!!!!!!!!!!!! To all Participants and Colleagues