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Proton Improvement Plan

Keith Gollwitzer

January 5th, 2015All Experimenters’ Meeting

1/5/2015

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PIP Objective UpdatedDevelop a plan to increase Proton Source throughput while maintain good availability and acceptable residual activation. The plan must address hardware modifications to increase repetition rate and improve beam loss while ensuring viable operation of the Linac through 2023 and Booster through 2030

Goals for the Linac and Booster to deliver 2.25E17 protons per hour (15 Hz)

while maintaining availability > 85%; residual activation @ acceptable levels

and ensuring a useful operation life.

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Linac 200 MHz RF Power System• 5MW pulsed Single Beam Klystron to operate at

201 MHz for use as the power source for the DTL Linac (could replace 7835 tube system)– Monitoring the production of the Klystron• Working out details about final testing• Manufacturing to be finished in September

• Upgrade of Modulator– Designing Control Card– 25-cell prototype work continues

1/5/2015

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Linac Notch• Goal is neutralize beam in RFQ Injector Line to

create gap in beam needed in Booster for extraction– An 80ns gap every 2.22μs for the length of multi-

turn Booster injection 27-35μs• Optical ports and mirror installed during last

shutdown• Moving laser system components from test lab

to optical box next to Linac• Installing optical shielding for safe laser light

transport• Working with timing signals to work within

accelerator control system• Hope to be able to test later this week

1/5/2015

Assembly at lab area

Assembly installed RIL

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Cavity refurbishmentVacuum

Water Contact

• Fragile!• ALARA

From M

Slabaugh (AD M

SD)

1/5/2015

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Cavity refurbishment

Surfaces are now uniform and parallelKnown distances between surfaces

We are adding landmarks on cavity body. Before testing, metrology

measures/references the outside landmarks with respect to the interior

beam pipe. This allows quicker alignment of cavity in the tunnel.

1/5/2015

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Tuner refurbishment

Badly damaged cone fingers

Clamp-stem connects tuner’s 2 cones’ fingers electrically to cavity

From M Slabaugh (AD MSD)

1/5/2015

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Tuner refurbishmentCones- 10 step processTD supporting work

From M Slabaugh (AD MSD)1/5/2015

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Goal is to have 17 installed prior to shutdown

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New Tuners• Many issues with any vendor able to produce

ferrite cores of the correct magnetic permeability for our application

• Just received a partial shipment of cores which appear to satisfy our requirements– We are doing QA for acceptance

• Technical Division will build new tuners with these cores

• These new tuners will speed up the refurbishment process

1/5/2015

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Other PIP Booster Work• West gallery bias supply upgrades continue• East gallery RF system testing of 15 Hz operation has been sporadic • Planning to repurpose two un-used cavities to make two more RF

stations• Cogging work is addressing problems with bucket jitter• Damper studies continue• Beam Position Monitor system is being designed• TLM tunnel hardware installed• Collimation studies to start• Working on design of a harmonic cavity • Next shutdown preparations continue

– Replacement of electrical transformer– Replacement of RF system anode supplies– Continuation of replacement of old vacuum components– Addition of 20th RF station

1/5/2015

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PIP Tasks Recently Completed

• Linac Transformer• Linac vacuum• Linac LCW• Purchase of Linac 7835 tubes• Booster Notcher

1/5/2015