Linac4 Parameter Table

shortcuts to General linac parameters, Error amplitudes, Beam evolution, Ion source and LEBT, RFQ, MEBT, DTL, CCDTL, PIMS, Transfer line, PSB injection

EDMS documents on:

• lengths and alignment tolerances for all linac elements (still evolving)
• estimates on the heat load for water/air cooling and electrical consumption for Linac4 and SPL duty cycle
• Linac4 parameter list
• magnet parameter list

General linac parameters

Error amplitudes (Maximum, uniform distribution)

Beam evolution

Ion source and LEBT

RFQ

MEBT (chopper line)

Parameter Value Comment Timestamp Beam energy 3 MeV   14 August 2007 Peak current 66.5/62 mA Input/output 14 August 2007 Average pulse current 66.5/40 mA Input/output 14 August 2007 Effective chopper plate voltage >400 V Seen by beam 27 August 2007 Chopper plate voltage >500 V   27 August 2007 Chopper rise/fall time < 2 ns 10--90% 14 August 2007 Chopper repetition rate 1--50 Hz   14 August 2007 Maximum chopping factor 40%   14 August 2007 Chopper deflection angle >5.3 mrad   27 August 2007 RF frequency buncher cavities 352.2 MHz   14 August 2007 Maximum buncher voltage 150 kV   14 August 2007 RF peak power per buncher 16--18 kW   14 August 2007 Number of buncher cavities 3 At 352.2 MHz 14 August 2007 Number of chopper structures 2 Inside quadrupoles 14 August 2007 Number of quadrupoles 11   14 August 2007 Length of chopper plates 400 mm   14 August 2007 Chopper plate distance 20 mm   14 August 2007 Length 3.7 m   14 August 2007 Beam collimation approx 7%   14 August 2007 Vacuum 10-7 mbar   14 August 2007

Beam size Chopper Line

DTL

CCDTL

Parameter Value Comment Timestamp Input energy 50 MeV   14 August 2007 Output energy 102.9 MeV   16 September 2008 RF frequency 352.2 MHz   15 August 2007 Average pulse current 40 mA   15 August 2007 Design RF duty cycle 14%   15 August 2007 Accelerating field E0 4--4.3 MV/m   3 March 2008 Maximum surface field 1.6--1.7 kilpatrick   3 March 2008 Synchr. phase -20 deg   15 August 2007 RF beam power 2.1 MW   20 October 2008 RF power per module 0.95--1.0 MW   3 March 2008 RF peak power 7.0 MW   3 March 2008 Number of klystrons 7   3 March 2008 Cells per cavity 3   15 August 2007 Cavities per module 3   15 August 2007 Number of cavities 21   3 March 2008 Number of modules 7   3 March 2008 Number of quadrupoles 21   3 March 2008 Focusing FODO   15 August 2007 Length 25.0 m   3 March 2008 Transition to PIMS 1.2 m   15 August 2007 Beam aperture 28 mm   15 August 2007 Vacuum 10-7 mbar   15 August 2007

Beam size CCDTL

PIMS

End to End Settings

Quadropole Settings