# Presentation: 205055

## Proton Plan Status November and December

- Eric Prebys

## Agenda

- Operations  – Prebys
- Technical Status/Shutdown Preparations – Prebys
- SNuMI/Nova/Proton Plan Restructuring - Prebys
- Cost/Schedule Report – Baller

## Operations

## Operational Highlights

- Excellent Running over Thanksgiving and Christmas
- MiniBooNE well above red curve
- NuMI at roughly red curve for weekly and approaching blue curve for integrated
- And this is with the erroneous 2 second curves!
- Total protons ~at red curve for both
- More recently
- MiniBooNE’s falling steel plate problem has shut them off for ~a couple months
- Not really a Proton Plan problem, but makes the numbers look bad

## NuMI

- Note: these plots assumed 2 second cycle time rather than the 2.4 seconds that has been the reality

## MiniBooNE

- Sword of Damocles

- Rusty steel chain

## Total Booster Output 

## New Tracking Plots 

- Thanks to Paul Derwent
- Available at AD->”9:00AM”->”Proton Plots” webpage
- Useful to see how we’re doing

## Technical Status

## Significant Activity Since Last PMG

- (1.1) Linac
- (1.2.2) Quad Power Supply Upgrade
- All P8 cards replaced
- Three prototype P1 cards in service
- Ready for procurement
- Design complete for P2 and P4 cards
- Preparing to build prototypes
- (1.2.4) Linac LLRF Upgrade
- Lots of progress
- Conceptual design review last week
- Ready to build test bench at LRF2
- Working to hammer out CR for proper budget and schedule
- What’s there is largely a placeholder

## Slide 11

## Booster Activity

- (1.2) Booster
- (1.2.3) New Corrector System (Lots of progress!!)
- Magnets
- All tests of first prototype look good
- Second prototype nearing completion
- After testing, this will go into the Booster
- Production of coils and cores begun and quality looks good
- Should start arriving next week
- Hammering out QA procedure
- Power supplies and cabling
- 40A design complete.  Procurement ~next week
- 60A design nearly complete
- Cable order ready to go out
- Controls
- Working primarily to adapt existing control software to handle new corrector system
- “First, do no harm”

## Second Corrector Prototype

- Hall probe array (polarity check)

- Potting fixture

## Booster (cont’d)

- (1.2.5) gamma-t
- Studies continue
- Slip Stacking test looks encouraging
- Engineering continues, but will delay any production until the next fiscal year.
- (1.2.12) Booster notch chopper
- Prototype test bed assembled in Booster staging area and tests under way
- Picture to follow
- Looks good, but cannot make shutdown
- Working on CR to shift schedule to be ready for 2008 shutdown

## Notcher Prototype Test Bed

- ~4m long x 21⁄4” high
- Real notcher will need ~40 kV
- Plates segmented
- Will be phased in such a way as to beta match the beam
- Serves as a model for a possible (pseudo-) electrostatic extraction kicker in the future.

## Booster (cont’d)

- (1.2.13) Booster RF Reliability Improvements
- Idendified a general problem with water availability
- Identified while discussing SNuMI
- Possibly already an issue
- Definitely an issue at higher rep. rate
- Contracting Mike May to work with water group (Matt Cooper), and they’ve come up with a plan
- Working on CR, but probably a few 10’s of $K this shutdown and ~$100K next shutdown.

## Slide 17

## Slide 18

## Main Injector Activity

- (1.3) Main Injector
- (1.3.2) MI Collimation Systems
- MI-8:
- Commissioning studies very successful
- See BEAMS-DOC-2618
- Nearly ready to put in operationally
- Need to improve positional stability of extracted Booster beam
- Ring:
- Design COMPLETE
- All steel (no Copper)
- Located around Ecool (Q301 Q303  Q307  Q308)
- Internal review coming up, after which procurement will start

## MI-8 Collimation Studies

- Loss (R/s)

- No Collimators

- H Collimators

- H&V Collimators

- BLM #

## Main Injector (cont’d)

- (1.3.3) Multi-batch slip stacking
- 11 batch slip stacking studies continue
- Considering partial slip stacking solution to increase beam to NuMI in the short term
- (1.3.4) MI RF
- Work proceeding
- Important to stay on schedule for the shutdown

## Shutdown Preparations

- Three Significant projects for the shutdown
- New Long Straight Booster Correctors (1.2.3)
- Project proceeding well
- No possibility of making a June shutdown (it was always marginal)
- July tight, but probably doable
- Magnets and power supplies in good shape
- If controls effort fall behind, there are a number of workable stopgap solutions.
- Main Injector collimation (1.3.2)
- Design complete
- Procurement should begin shortly
- Collimators very similar to Booster and MI-8 systems
- Becoming experts at building and installing them
- Added complication from moving MI bus and shielding for Recycler operation
- More at next PMG
- MI RF Upgrade (1.3.4)
- Quietly proceeding on schedule
- Easy to forget how important it is
- Looks good, but very important that Tim gets the resources he needs.

## Project/Campaign Restructuring

## What’s in a Name?

- Scenarios (current name shown in **green**):
- “Stage 1”: MINOS era (concurrent with Run II), aka: “business as usual”, Proton Plan,  Proton Plan 1, **Proton Plan**
- Ramp up to deliver slip stacked protons to both NuMI and antiproton production
- Continue to deliver protons to the 8 GeV line at some level
- Goal:
- ~380 kW to NuMI
- 1-2E20 protons to 8 GeV line
- Status: in progress
- “Stage 2”: Nova era (after collider program), aka: SNuMI I, Proton Plan 2, **“part of Nova”**
- Use Recycler as a pre-loader to the Main Injector to eliminate loading time
- Becoming a formal plan.
- Goal
- ~700 kW to NuMI line
- Status: “probable”
- “Stage 3’ ”: enhanced NoVA++, aka: Obietron, McGinnis-o-tron, SNuMI II, **SNuMI**
- Use Antiproton Accumulator Ring to momentum stack protons
- Boxcar stack these protons into Recycler
- Load into Main Injector
- Goal
- ~1.2 MW to NuMI line
- Status: “wait and see what happens with ILC”.
- “Stage 3”: 8 GeV Linac, aka: Proton Driver, Foster’s folly, **“HINS”**
- Always a possibility, but not part of our baseline thinking at the moment.
- Status: only if the ILC is not built, or not built for a* very* long time.

## Orders from Above

- It was decided in Washington the NoVA project would be combined with the accelerator activities required to make it a success
- Not so crazy when you think about it
- NoVA now “assimilates” the effort to retask the recycler as a MI preloader (most recently called “SNuMI”).
- NoVA goes from $200M->$240M
- By the end of the Proton Plan, the Booster/Linac will be “good enough” to support NoVA alone
- All Booster activity dropped from NoVA/SNuMI
- Moved to Proton Plan
- Only included 15 Hz hardware upgrades needed for things beyond, or in addition to, NoVA
- The good news:
- Booster and Linac people will not have to go to NoVA/SNuMI reviews
- Bad news:
- This rearrangement has left some activity orphaned.

## Rationale

- Present

## Orphaned Scope

- The cost is driven by the upgrades that are required to increase the average repetition rate of the Booster RF system
- Tuner cooling
- Bias supply improvement
- Anode supply refurbishment

## Nominal Schedule

- Still important
- Must fit into Proton Plan somehow
- Still working out details of CR’s (move as much to FY08 as possible)