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Gollwitzer AEM 1
Proton Improvement Plan
Keith Gollwitzer
January 5th, 2015All Experimenters’ Meeting
1/5/2015
Gollwitzer AEM 21/5/2015
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.
Gollwitzer AEM 3
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
Gollwitzer AEM 4
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
Gollwitzer AEM 5
Cavity refurbishmentVacuum
Water Contact
• Fragile!• ALARA
From M
Slabaugh (AD M
SD)
1/5/2015
Gollwitzer AEM 6
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
Gollwitzer AEM 7
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
Gollwitzer AEM 8
Tuner refurbishmentCones- 10 step processTD supporting work
From M Slabaugh (AD MSD)1/5/2015
Gollwitzer AEM 91/5/2015
Goal is to have 17 installed prior to shutdown
Gollwitzer AEM 10
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
Gollwitzer AEM 11
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
Gollwitzer AEM 12
PIP Tasks Recently Completed
• Linac Transformer• Linac vacuum• Linac LCW• Purchase of Linac 7835 tubes• Booster Notcher
1/5/2015