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Accelerator R&D for Future Large Colliders at IFIC

Accelerator R&D for Future Large Colliders at IFIC. Scientific Staff: A. Faus-Golfe, C. Alabau, J.J. García, S. Verdu, J. Alabau Technical Staff: J.V. Civera, C. Blanch. Capabilities. BEAM INSTRUMENTATION :. BEAM DYNAMICS EXPERTISE:. Optics design Non-linear dynamics studies

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Accelerator R&D for Future Large Colliders at IFIC

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  1. Accelerator R&D for Future Large Colliders at IFIC Scientific Staff: A. Faus-Golfe, C. Alabau, J.J. García, S. Verdu, J. Alabau Technical Staff: J.V. Civera, C. Blanch ILC Spain 09

  2. Capabilities BEAM INSTRUMENTATION : BEAM DYNAMICS EXPERTISE: • Optics design • Non-linear dynamics studies • New instrumentation techniques • Commissioning - CALCULATION • Electromagnetic analysis • Electric circuits & electronics • Mechanical analysis - PROTOTYPING Emittance simulations and measuremts in ATF • Design: tooling, drawings • Fabrication follow-up • Assembly • Testing and Calibration 3-D modelling of BPM ILC Spain 09

  3. Main ongoing projects • ILC and its Test Facility ATF-ATF2: Beam dynamic studies and commissioning of the ATF EXT line (LAL, KEK, SLAC) Multi-OTR system for ATF2 (SLAC, KEK) BPM supports with micromovers for FONT4 in (KEK, JAI) BDS instrumentation studies • CLIC and its Test Facility CTF3: • BPM’s for the TBL in CTF3 (UPC, CERN, Applied Physics-UV) • Drive Beam BPM’s for CLIC module (CERN) • Super Large Hadron Collider: Beam dynamics studies and measurements on beam halo, intensity reach and collimation efficiency (CERN-EUCARD) ILC Spain 09

  4. ILC and its Test Facility ATF/ATF2: ATF was built in KEK (Japan) to create small emittance beams. The Damping Ring of ATF has a world record of the normalized emittance of 3x10-8 m rad at 1.3 GeV. ATF2 has been built to study the feasibility of focusing the beam into a nanometer spot (~40 nm) and nanometer stability in a future linear collider. Extraction line drives the beam from ATF to ATF2 ILC Spain 09

  5. ATF and ATF2: Emittance growth The beam passes horizontally off-axis through the shared magnets with the DR diagnostic section extraction wire scanners OTR monitor (OTR) Since several years, the vertical emittance measured in the diagnostic section of the EXT line is significantly larger than the emittance measured in the DR. The simulations and the measurements of the effect of non-linear magnetic fields (mainly QM7R) show an emittance growth with a strong dependence with the extraction position. But still there must be another source for the emittance growth since the extracted beam was significantly larger than expected in three of the data sets. Recently, the QM7R magnet was replaced by a similar one with larger aperture, for which magnetic measurements and simulations indicate that non-linear fields are negligible at the extraction position. Beam size at the OTR/XSR ILC Spain 09

  6. ATF and ATF2:Multi-OTR System diagnostic section extraction wire scanners OTR monitor (OTR) Emittance measurements with the wire scanners located in the diagnostic section of the EXT line are very slow. • Multi-OTR (4 units) beam dynamics studies, design, construction, and characterization including associated software control and electronics ILC Spain 09 ILC Spain 09 6

  7. ATF and ATF2: Multi-OTR System diagnostic section extraction OTR1X OTR2 OTR0 OTR1 OTR3 OTR4 The location of the OTR’s has to be optimized such that the phase advances be apropiate to allow emittance measurements ILC Spain 09 ILC Spain 09 7

  8. ATF and ATF2:Multi-OTR System Beam dynamics calculated with MAD to study the beam sizes in order to place the OTR’s. y vs x x’ vs x y’ vs y MW0X MW1X ILC Spain 09 8 ILC Spain 09

  9. CCD camera beam target Current OTR installed in the ATF2 EXT line Beam spot measurement with OTR ATF and ATF2:Multi-OTR System The current OTR was updated with a new target and target actuator, calibrated and tested with beam during November ´09. ILC Spain 09 9

  10. Target inserter 90deg mirror Prosilica camera Focus adjuster slide Mitutoyo 10X lens And 1x tube lens X and Y target position viewing adjusters Newport Vertical mover Newport Horizontal mover ATF and ATF2:Multi-OTR System New design of the OTR for ATF-ATF2 New OTRs will have same controls and motion capabilities as current OTR with the following improvements: • - Target actuator relocated to the top (no interference with the girder) and smaller design  greater flexibility in the OTR placement • - Thinner target  reduce radiation damage • - CCD camera parallel to the target (before it was not parallel, which meant that the beam spot was in focus on only a small portion of the target)  greater depth of field. • - 12 bit camera for more dynamic range with smaller pixel size for more resolution. Installation planned on March´10 ILC Spain 09 10

  11. ATF and ATF2:BPM’s supports with micromovers for FONT4 FONT – Feedback On Nanosecond Timescales IP intra-train feedback system • Last line of defence against relative beam misalignment • Measure vertical position of outgoing beam and hence beam-beam kick angle • Use fast amplifier and kicker to correct vertical position of beam incoming to IR ILC Spain 09 ILC Spain 09 11

  12. Movers & holding structure Labview Software development ATF and ATF2:BPM’s supports with micromovers for FONT4 • design, construction, and characterization including associated electronics and software development of 3 sets Range: ±1 mm Step size: 10 μm Stability better than 1 μm Time response ~ sec Realignment of BPM to increase the resolution ILC Spain 09 ILC Spain 09 12

  13. Mover installed at ATF2 ATF and ATF2:BPM’s supports with micromovers for FONT4 One set has been assembled and installed in ATF2. At the moment it’s under modification by magnetic problems. Other two sets in construction. Software already finished. Realistic simulations of the beam dynamics including the FONT feedback system are being made at the moment. ILC Spain 09 ILC Spain 09 13

  14. The CLIC and its Test Facility CTF3: The TBL is designed to study and validate the drive beam stability during deceleration in CTF3. The TBL consists of a series of FODO lattice cells and a diagnostic section at the beginning and end of the line. Each cell is comprised of a quadrupole, a BPM (labeled as BPS) and a Power Extraction and Transfer Structure (PETS) . 3D View of a TBL cell with the PETS tanks, the BPS’s and the quadrupoles BPS Prototype Inductive Pick-up (IPU) 2.25 cm Inductive sensors PCB ILC Spain 09 TBL beam time structure

  15. CTF3: BPM’s for the Test Beam Line BPS Prototypes, Series Production and Calibration • A set of two prototypes of the BPS's labeled as BPS1 and BPS2 with its associated electronics has been designed, constructed and characterized by the IFIC team with the collaboration of the CTF3 team at CERN (May 2008). • BPS1, jointly with its support and its amplifier, was installed successfully at TBL; BPS2 remained at IFIC as spare (July 2008). • BPS1 first beam measurements were carried out (August 2008). • The BPS series production (15 units) started at IFIC labs (November 2008). • A new wire test bench for BPS series characterization tests was designed and built at IFIC (March 2009). Wire set-up for BPS prototype characterization tests at CERN Labs Control and DAQ equipment for all the setup signals Low-frequency wire set-up 3D view design Measurements of the BPS1 with beam in the TBL line BPS1 and its support installed in the TBL line Overview of the new wire test bench for BPS series characterization tests at IFIC labs ILC Spain 09

  16. CTF3: BPM’s for the Test Beam Line BPS Prototypes, Series Production and Calibration • Tests for BPS2 and BPS3 carried out with the new wire set-up at IFIC. Less than 50um accuracy (March 2009). • Two more BPS units was delivered and installed, BPS2 and BPS3 both with new improved electronic PCBs (May 2009). • 14 BPS units construction and assembly process finished (August 2009). • A LabVIEW application (SensAT v1.0) is developed for automatize the BPS series characterization tests in the new wire test bench (September 2009). • The 14 BPS units tests finishes, they are delivered to CERN and finally installed in TBL (October 2009). • All the BPS are validated successfully in TBL after first calibration tests (October 2009). • Beam tests in TBL for the full installed BPS series. Measurements at high beam current (30A) and checking of the BPS’ resolution and performances. ILC Spain 09 All BPS units jointly with its supports and amplifiers installed in TBL (CLEX area, CERN). Calibration test in TBL shows good BPS performance with flat-top pulse response.

  17. CTF3: BPM’s for the Test Beam Line BPS High Frequency Test • To determine the BPS longitudinal coupling impedance at more than 12GHz, affecting beam stability. • Development of HF set-up has been carried out in parallel of the BPS series production. • Electromagnetic simulation of HF set-up design (until 30GHz) with specialized software FEST3D • HF set-up manufacturing and BPS HF tests to be performed next January -40dB Simulation SW: FEST3D -40dB Simulation SW: HFSS Simulation results of last HF set-up design. S11 reflection parameter from 0 to 30GHz. ILC Spain 09 3D views of the High frequency set-up design for measuring the BPS longitudinal coupling impedance

  18. CLIC: Drive Beam BPM for the 1st CLIC module The drive beam quadrupole and BPM are mounted on the drive beam girders. BPMs cannot be moved independently of the PETS, the quadrupoles will either be on movers, or equipped with dipole corrector coils. The BPMs are mounted before quadrupoles. The acceptable level of wake field needs to be determined. Nominal beam parameters: Charges/bunch: 5.2 1010 Nb of Bunches: 2922 Bunch length: 1mm Train length: 243.7ns DB BPM

  19. ThanksforyourAttention ILC Spain 09

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