CARE 06, Frascati, 17.11.05 1 HIPPI in 2006 -HIPPI Objectives -2006 Activities -ESAC Report...

1 CARE 06, Frascati, 17.11.05

HIPPI in 2006HIPPI in 2006

- HIPPI Objectives- 2006 Activities- ESAC Report- Planning and

deliverables

Maurizio Vretenar, CERN


HIPPI:HIPPI: High Intensity Pulsed High Intensity Pulsed Proton Injectors Proton Injectors

Main objective:

Research and development of the technology for high intensity pulsed proton linear accelerators up to an energy of 200 MeV.

Applications of the HIPPI results:Upgrade of the linac injectors for GSI, CERN and RAL.

10 participating laboratories:RAL, CEA, CERN, FZJ, GSI, IAP-FU, INFN-MI, (INFN-NA), LPSC, IPNO

Expected budget:14.7 M€ (FC-equivalent), EU contribution 3.6 M€


HIPPI WorkplanHIPPI Workplan

Chopper B

Models for RF properties, drift tubes, alignment

Prototype for power tests, beam dynamics analysis

Model for RF properties

Prototype for power tests

Prototype, hardware test

Drift Tube Linac

H-mode Linac

Side Coupled Linac

Cell Coupled DT Linac

Design of the GSI Injector

Design of the CERN Injector

Design of the RAL Injector

Following Phase

Comparative assessment of beam optics

layouts, simulations, experiments

Work

Package 2

Work

Package 3

Elliptical Cavities Prototypes for pulsed power test

Spoke Cavities Prototypes for power test

CH Resonator Tuning system construction and test

Experiments at CERN (3 MeV) and GSI (UNILAC)

Work

Package 5

Code development

Preparation of codes and specific routines

Code benchmarking

Comparison of beam dynamics codes

Diagnostics Prototypes

Beam experiments

HIPPI Joint Research Activity

Work

Package 4

Chopper A Prototype, hardware test

Chopper Line Assembling, testing with beam

Comparative assessment of NC structures

Comparison NC / SC

Comparative assessment of chopper and chopper line performance

Comparative assessment of SC structures

2007-08: -comparative assessments

- Linac designs being finalised


HIPPI Technical GoalsHIPPI Technical Goals

HIPPI Technical Goals from HIPPI Proposal (Annex 1), reviewed at the HIPPI06 Meeting:

WP2: High shunt impedance normal conducting WP2: High shunt impedance normal conducting cavitiescavities

ZT2 > 40 M/m, 3 … 100 MeV, low cost

WP3: Low beta superconducting cavitiesWP3: Low beta superconducting cavities

Eacc > 7 MV/m, Q > 1010, 5 … 200 MeV

WP4: Lossless injection in a ringWP4: Lossless injection in a ring

chopper rise time < 2 ns, minimum emittance growth

WP5: Control of the haloWP5: Control of the halo

validation of codes, design for loss < 1 W/m up to 1 GeV


Jan Feb March Apr May Jun Jul Aug Sep Oct Nov Dec CARE & HIPPI

CSC Meeting 11

Paris 13-14 CERN

WP2 Meeting 18-19

Grenoble

WP3 Meeting 27-28

Juelich

WP4 Meeting 4-5

CERN

WP5 Meeting 27-28

Juelich

HIPPI Annual Meeting 27-29 Juelich

CARE Meeting 15-17

Frascati Collaboration meetings

IPHI-SPL meetings 15-16 Saclay

ISTC meetings 27-30

Novossib. 5-7

CERN Conferences, workshops

HB 2006 Workshop 29.5-2.6 Tsukuba

EPAC 2006 26-30

Edinbourgh

LINAC 2006 20-25

Knoxville

RuPAC 2006 10-14

Novosib.

2006 Meetings2006 Meetings


2006 Annual Meeting2006 Annual Meeting

IKP, Forschungszentrum Jülich, Jülich (Germany)

- 37 participants from 14 Laboratories (10 HIPPI, 1 external, 3 members of External Scientific Advisory Committee - ESAC)

- 28 technical presentations: 4 on general (inter-WP) topics, 24 on WP specialist topics + 4 presentations on organizational or administrative matters.

- 25% of time devoted to questions and discussion.

- The ESAC participated actively to the discussions (+ 5 hours for reviewing)

HIPPI06

Programme, copy of slides, list of participants: http://www.fz-juelich.de/ikp/hippi/autumn2006/


2006 Publications2006 Publications

Good number and quality of HIPPI Publications in 2006:

CARE-CONF : 18CARE-NOTES : 9CARE/HIPPIdoc : 1

For a total of 28 papers in 2006

(until end of October, average of 2.8/month)


WP2: Normal-conducting structuresWP2: Normal-conducting structures

Lab. Structure Name HIPPI Power Gaps Frequency

(MHz) Energy (MeV)

profile

CERN DTL ISTC Tank1

No (components)

cold/hot 28 352 3 – 10 Variable

IAP CH Model Yes cold 8 352 5 Fixed

IAP CH Prototype hot

CERN CCDTL Proto 1 Yes hot 4 352 50 Fixed

CERN CCDTL Proto 2 (ISTC)

Yes hot 8 352 50 Variable

LPSC SCL Model Yes cold 11 1000 90 Fixed

Overview of the 6 models (cold) and prototypes (hot) developed, built and analysed inside HIPPI:


WP 2 – Progress with CH-DTL WP 2 – Progress with CH-DTL for the GSI linacfor the GSI linac

Some convergence (or cross-fertilization): coupling cells have been added to the CH-DTL structure, as in CCDTL and SCL.

New (top) and old design (bottom) of the intertank connection of the CH-DTL developed at IAP-Frankfurt for the FAIR project at GSI

The CH-DTL model built at IAP-Frankfurt.

Decision by GSI to move from 352 MHz to 324 MHz:easier CH-DTL and compatible with UNILAC upgrade(324=3*108), but no more standardisation offrequencies at the European level.


WP2 – Prototyping at CERN for WP2 – Prototyping at CERN for Linac4Linac4

Concern: delays (1 yr CCDTL1, 6 months CCDTL2) and bad quality of work due to priority given to LHC (CERN mechanical workshops, CERN vacuum team, even Novossibirsk workshops!)

CCDTL pre-prototype built at CERN during high-power tests (left). Prototype built in Russia by ISTC (right) being completed (delivery at CERN in Jan. 07)


WP2 – Drift Tube Linac StudiesWP2 – Drift Tube Linac Studies

Studies of DTL post-coupler stabilisation at CERN

478

Mechanical design of ISTC DTL prototype


WP2 – Side Coupled at LPSCWP2 – Side Coupled at LPSC

Side Coupled model and RF coupler for DTL being made at LPSC (participation to Linac4 R&D).


WP3 (Superconducting) – WP3 (Superconducting) – review of prototypesreview of prototypes

Lab. Type Name HIPPI Beta

design Gaps

Frequency (MHz)

CEA Elliptical Cavity B Yes 0.47 5 704

INFN Elliptical Cavity A Only tests 0.47 5 704

IAP CH Prototype No (only tuning)

0.1 19 352

FZJ Spoke 3-spoke Only tests 0.2 760

FZJ Spoke 3-spoke Yes 0.48 4 352

IPNO Spoke 1-spoke Only tests 0.35 2 352

IPNO Spoke 1-spoke Yes 0.15 2 352

7 prototypes in HIPPI: 3 built and tested, 3 only tested in pulsed mode, 1 only for the tuning system:


WP3 – HighlightsWP3 – Highlights


WP3 – HIPPI test area at CEA SaclayWP3 – HIPPI test area at CEA Saclay


WP3 – RF for 700 MHz test WP3 – RF for 700 MHz test standstand


HIPPI Prototypes - ChoppersHIPPI Prototypes - Choppers

Chopper A (CERN) Chopper B (RAL)

Fast Fast Slow†

Rise/fall time < 2 nsec ≤ 2 nsec ≤ 15 ns

Max. rep rate 50 MHz 2.6 MHz 1.3 MHz

Max. voltage/target 250 V/500V 1400V / 2200V

≤ 6kV

Reliability TBD TBD TBD

Flexibility Min 8 nsec (3 bunches) 7 – 15 ns

200 ns – 100 us

Chopping effectiveness

(calculated)

99.7% 99.0 %

Emittance growth of the un-chopped

beam

8% 8% (New 3 MeV MEBT design)‡


WP4 Progress – CERN-chopper WP4 Progress – CERN-chopper structurestructure

September 05September 06

electrical measurements and

vacuum tests are done : OK


WP4 Progress – CERN dumpWP4 Progress – CERN dump

READY


Fast and slowchoppermodules

Chopper 1 (fast transition)

Chopper 2 / Beam dump(slower transition)

BEAM

1.5 m

WP4 Progress -RALWP4 Progress -RAL

DESIGN HAS CHANGED RECENTLY.


Two turn load inductance~ 50 nH

Load capacitance ~ 30 pf

6 kV, 400 MHz ÷ 1000 probe

- 8 kV~ 5 μF LF cap.bank

+ 8 kV~ 5 μF LF cap.bank

- 8 kV~ 3 nF HF cap.bank

+ 8 kV~ 3 nF HF cap.bank

HVdampingresistor

8 kV push-pullMOSFETswitch

Trigger input

Auxiliary power supplies

Cooling fan

SPG pre-prototype ‘Breadboard’ system

WP4 Progress -RALWP4 Progress -RAL


WP4 Problem : DELAYS WP4 Problem : DELAYS

Delay in the CERN mechanical workshop Delay in the CERN mechanical workshop ((low-prioritylow-priority in front of LHC) in front of LHC)

Delay in vacuum testing ( Vacuum group Delay in vacuum testing ( Vacuum group overloadedoverloaded))

Delays in delivery of the IPHI-RFQ at CERN Delays in delivery of the IPHI-RFQ at CERN (key component of the 3 MeV test stand)(key component of the 3 MeV test stand)

Move of the lab area at RAL Move of the lab area at RAL


HIPPI@SaclayHIPPI@Saclay

QUAD

DUMPBSHM

Choppers

•No compromise on the HIPPI goals by going to Saclay w.r.t. tests originally foreseen at CERN.

•Agreement of the IPHI Steering Committee. Technical document in preparation, to be validated by the next IPHI Steering Committee in October.


HIPPI@Saclay-scheduleHIPPI@Saclay-schedule


WP 5 – Beam dynamicsWP 5 – Beam dynamics

Preparation of appropriate tools for the analysis of high-intensity linear accelerators: beam dynamics codes and detectors.

Benchmarking of 7 codes (some old, some new, some updated) finished, results are comparable, benchmarking in progress with measurements at GSI UNILAC: first measurement campaign successfully completed in (March and October 06).

Progress in the understanding of beam neutralization phenomena.


WP 5 – Simulations for CERN and WP 5 – Simulations for CERN and GSI Linac designsGSI Linac designs

Beam dynamics work focused on the requirements of 2 well defined linac projects: CERN Linac4 (tracking+error studies) and GSI FAIR linac (space charge routine for LORASR).


ESAC AssessmentESAC AssessmentAll 3 ESAC members present at HIPPI06 (J. Stovall, A. Pisent, Y.

Yamazaki), ESAC report received (although only yesterday…). 13 page document, quite complete analysis of all HIPPI activities, will

be annexed to the HIPPI Annual Report.

In general the committee found all of the presentations to be of professional quality. In some cases the work represents important contributions to the art as described below. In some cases the presentations demonstrate the professional development of young scientists under the excellent tutelage of senior scientists. All of the presentations presented represent work at the “international standard.”

With the focus on specific upgrade designs, and while no less important, it will be more challenging for the work-package managers to maintain the close collaborations among the HIPPI institutions that we have seen in the first 3 years. The committee is pleased to observe no reluctance among the participants to collaborate with their colleagues and in some cases to note strong inter-lab collaborations.

Concerns of the ESAC: delays in chopper beam tests – delays in DTL tank prototype -


Deliverables 2006Deliverables 2006

8 deliverables8 deliverables originally scheduled for 2006 (3 for originally scheduled for 2006 (3 for the summer, 5 in December)the summer, 5 in December)

Reviewed list (HIPPI06, September) : Reviewed list (HIPPI06, September) : 1 has been delivered 3 are expected in December 06 1 merged with an achieved milestone (collimators dump) 3 rescheduled for 07 (late by 6 – 7 months)

0

2

4

6

8

10

12

14

16

18

2004 2005 2006 2007 2008

Deliverables

Milestones

Milestones Deliverables Total2004 1 0 12005 16 1 172006 4 8 122007 5 9 142008 1 13 14

58


Milestones 06 Milestones 06

3 milestones for 06 + 10 carried over from 3 milestones for 06 + 10 carried over from 05 : 05 : 16 milestones in 200616 milestones in 2006

Status today : Status today : 9 milestones completed, 4 to be completed by dec06, 3 rescheduled for 07

CARE 06, Frascati, 17.11.05 1 HIPPI in 2006 -HIPPI Objectives -2006 Activities -ESAC Report...

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