Status and plans of 3 mev test stand
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Status and Plans of 3 MeV Test Stand. The 3 MeV Test Stand is installed in the PS South Hall extension (building 152). Activities at the Test Stand in 2010 Source Operation. Impossible to operate the ion source with H - at 45 kV extraction voltage.

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Status and plans of 3 mev test stand

Status and Plans of3 MeV Test Stand



Activities at the test stand in 2010 source operation
Activities at the Test Stand in 2010 extension Source Operation

Impossible to operate the ion source with H- at 45 kV extraction voltage

Characterize the source for p extraction at 45 kV to allow RFQ and partial MEBT commissioning


Activities at the test stand in 2010 source results with protons
Activities at the Test Stand in 2010 extension Source Results with protons

  • The energy spread of the beam is not larger than 400 eV (50 eV per mm) => ± 200 eV => ± 0.4 %

Slit 1 mm

Sol 600 A

Pictures from O. Midttun’s presentation


Activities at the test stand in 2010 mebt line completed
Activities at the Test Stand in 2010 extension MEBT line completed

With 3rdbuncher cavity


Activities at the test stand in 2010 rf installation progress
Activities at the Test Stand in 2010 extension RF installation progress

2nd buncher amplifier installed


Activities at the test stand in 2010 pims prototype tested
Activities at the Test Stand in 2010 extension PIMS prototype tested


Activities at the test stand in 2010 pims prototype tested1
Activities at the Test Stand in 2010 extension PIMS prototype tested

Table courtesy of R. Wegner

Nominal gradient of 4 MV/m reached with 700 kW


Activities related to the test stand in 2010 movable test bench
Activities related to the Test Stand in 2010 extension Movable Test Bench

Design of Test Bench completed;

Design of all components completed;

Fabrication started for all components;

Start of assembly in May.


Status and plans of 3 mev test stand

Activities related to the Test Stand in 2010 extension Movable Test Bench

  • Characterize the beam properties at 3 MeV:

    • At the RFQ exit in the Linac4 Test Stand (late 2011 and beginning of 2012)

    • At the chopper line output in the Linac4 Test Stand (during 2012)

    • At the chopper line output in the Linac4 Tunnel (early 2013)

  • Characterize the beam properties at 12 MeV:

    • At the DTL tank1 output in the Linac4 Tunnel (first half 2013)

From: G. Bellodi - User Specification for Linac4 Test Bench Diagnostics


Status and plans of 3 mev test stand

Activities related to the Test Stand in 2010 extension RFQ fabrication and measurement


Status and plans of 3 mev test stand

Activities related to the Test Stand in 2010 extension RFQ fabrication and measurement

Module 1 completely brazed, final machining still to be performed:


Status and plans of 3 mev test stand

Activities related to the Test Stand in 2010 extension RFQ fabrication and measurement

Module 3 passed 1st brazing, now is being machined for 2nd brazing.


Status and plans of 3 mev test stand

Activities related to the Test Stand in 2010 extension RFQ fabrication and measurement

Planning to RFQ completion


Status and plans of 3 mev test stand

Activities at the Test Stand in 2011 extension

  • Continue measurements and development of the ion source;

  • Complete the infrastructure for the RFQ and Movable Test Bench installation (cabling, cooling);

  • Perform the interlock system installation;

  • Assemble the Movable Test Bench;

  • Complete equipment installation (buncher amplifier(s), LLRF equipment, beam diagnostics, power supplies);

  • Equip the control room;

  • Perform the RFQ final tuning;

  • Perform the RFQ RF commissioning.

  • The Test Stand equipment will be moved to Linac4 at the beginning of 2013.