Status of HIPPI – April 2007

1. Status of HIPPI – April 2007 Maurizio Vretenar Alessandra Lombardi 1

2. Contents • News since September 2006 • HIPPI06 and referee comments • WP highlights • Meetings, deliverables • Outlook for 2007 2

3. HIPPI06 Meeting in Jülich • JRA Meeting on September 27th – 29th in Julich. • 35 registered participants from all contributing institutes + 1 or 2 external. • All 3 members of the ESAC: J. Stovall (LANL-SNS), Y. Yamazaki (KEK-JPARC), A. Pisent (LNL). • 24 WP talks • 4 general talks • Overview of HIPPI prototypes • LINAC4 and FAIR • Comparison NC/SC structures above 90 MeV 3

4. HIPPI06-referee comments • Overall very positive • Worries/recommendations • Delays (chopper testing and ISTC DTL) • More exchange WP3 WP5 • EM interference • More sophisticated treatment of expected beam loss as a function of error tolerances 4

5. Hardware by WP • WP2 (normal conducting cavities) : • DTL power coupler • H-DTL • SCL (cold model) • CCDTL (2 prototypes) • WP3 (super conducting cavities) : • Cavity A and B (elliptical cavities) • Spoke cavities • 700 MHz • 352 MHz 2-gap and multi-gap • CH resonator • 700 MHz RF test stand 5

6. WP2 achievements • All the 4 milestones achieved, 2 deliverables due for December 06 are delayed by a few months. • 4 prototypes of accelerating structures are completed (3 are being tested), 1 more is under construction, a DTL coupler is ready: The CH model built and tested at IAP Frankfurt Cells of the SCL prototype built at LPSC Grenoble, presently under test The CCDTL prototype the day of delivery at CERN (Jan. 07), presently under testing 6

7. CCDTL prototype built under the ISTC contract 2875: 1 acc. tank + coupling cell + 1 acc. tank + coupling half-cell Copper plated parts VNIITF Who did what? • VNIITF: • Half-tank shells and coupling cells • (copper plated inside) • Support frame CCDTL module section during frequency tuning DT installation VNIITF, Snezhinsk  02.2006 BINP, Novosibirsk 01.2007 CERN, Geneva BINP Mech. & vacuum checks (VNIITF, BINP, CERN)  Low-level rf measurements (BINP, CERN) High power tests (CERN) • BINP: • DTs, fixed tuners and waveguide • External water cooling circuits • Final assembly 7 A.G.Tribendis@inp.nsk.su RFNC-VNIITF, Snezhinsk BINP, Novosibirsk

8. The field profile in the accelerating gaps was measured using bead pulling. Field flatness over the two tanks is within 1.5%. 8

9. Comparison of the field profile measurements done at CERN and at BINP (green) 9

10. WP3 achievements • All the 6 milestones have been achieved, the only deliverable due by mid term (cavity B ready) has been achieved end of March 07. • All components for the test stand at CEA Saclay have been delivered, installation is in progress • Prototype superconducting cavities are readyor under construction: Design of the 3-spoke cavity (FZJ-IPN) being built at FZJ. Cavity B being prepared for tests at CEA Saclay High-power RF components for the test stand at Saclay 10

11. Elliptical Cavity B is now at Saclay 11

12. Main components of the RF power test stand are now at Saclay HV Pulse power supply 110 kV power supply 1 MW – 704 MHz Klystron 704 MHz Circulator, RF loads and bi-directionnal couplers 12

13. View of the complete RF power platform Klystron 1300 MHz 2MW 110 kV power supply HV Pulse Generator Power supply Klystron 700 MHz 1MW IOT 80kW Load Circulator Load Circulator CryHoLab RF power platform • Next 2 months : • - wave guide connection • Installation of the water-cooling system • Commisionning of the RF power test stand in June 07 13

14. Hardware by WP (continued) • WP4 (chopping) • Chopper structures (A,B) • Chopper drivers (A,B) • Dump • WP5 (beam dynamics) : • Diagnostics • Profile by fluorescence • Non interceptive bunch measurement • Halo device • Beam profile at FZJ • Measurements at the UNILAC 14

15. WP4 achievements 2004-2006 • All the 5 milestones and 1 deliverable due by mid term have been reached. • Three pieces of hardware are ready : CERN chopper plates housed inside a quadrupole, ready to be mounted on the 3 MeV beam line. CERN dump, based on the hyper-vapotron geometry, capable of intersecting the deflected beam power up to 78 MW/m2 RAL Slow Pulse Generator pre-prototype ‘Breadboard’ system 15

16. CERN solution, based on mosfet, tested in april06. It works, need money to build the other 3 units. BACK-UP. St. Petersburg solution, based on semiconductor. 6 months delay on delivery. MAINLINE WP4 –CERN - driver 700 V 550 V 16

17. WP5 achievements • 2 milestones delayed by 6 months with justification, 4 achieved. • Code development and code comparison advancing as planned • Diagnostics are ready: 3 deliverables achieved, 1 delayed (April 07) Bunch Shape and Halo Monitor during the test with a laser beam in 2006. Tests with a particle beam are planned for 2007. A Beam Induced Fluorescence (BIF) Monitor installed on the GSI LINAC 17

18. Milestones and deliverables DELIVERABLES : 2005 : 1/1 delivered 2006 : 4/8 delivered. 3 delayed to 2007 1 delayed to 2008 2007 (up to today) : 1 delivered, 1 delayed by 3 months 18

19. Milestones and Deliverables 19

20. Milestones and deliverables 20

21. Milestones and deliverables 21

22. 2007- worries • DTL (WP2) model from Russia will not come or will be very late. Alternative model at CERN with contributions from Russia. • Chopper tests with beam will be possible only in June 2008 at the earliest : impacts two deliverables • Staffing problems at RAL (?) : impacts one deliverable 22

23. Dissemination and WP meetings • Dissemination • 8 notes, 2 reports since sept 2006 • 2 conference papers • Periodical HIPPI reports delivered (and about to..) • WP meetings : • WP2 : may 24th at CERN • WP3 : april 27th in Orsay • WP4 : not fixed yet • WP5 : may 21st in Saclay 23