# Presentation: 445866

## Proton Plan Status

- Eric Prebys

## Linac and Booster Shutdown Status – Prebys
Main Injector Shutdown Status - Kourbanis
Overall Shutdown Schedule – Mau’s designee
Cost/Schedule Report – Baller

- Main Injector Shutdown Status - Kourbanis
- Overall Shutdown Schedule – Mau’s designee
- Cost/Schedule Report – Baller

- Agenda

## Technical Status

## Proton Plan Shutdown Projects

- (1.1) Linac
- (1.2.4) Linac LLRF Upgrade
- Goal: Complete at least station 5 and all prep work (VXI crates, etc) for other stations.
- Adjust coupling on stations 3 and 5
- (1.2) Booster
- (1.2.3.2) Booster long straight correctors
- Original goal: Install 24 new correctors in long straight sections
- De-scoped goal: Install 12 new correctors in odd long straight sections
- Includes 1 and 3, the most difficult
- (1.3) Main Injector
- 1.3.2.3 Collimation System
- Goal: Install ring collimation system at MI-30

## Linac Status

- Proton Plan Work:
- Coupling adjustments to tank 3 and 5 done and tested
- All prep work for RF upgrade installed
- VXI crates in station 1-5
- ILC FPGA board delayed
- New LLRF wil NOT be on any stations for turn-on
- Will have to adiabatically schedule upgrade as time allows
- 1-2 days for first station
- Less after that
- Beam to NTF tomorrow evening
- Non Proton Plan work:
- Service ion sources and upgrade vacuum systems - DONE
- PM on LEL and water systems - DONE
- Install MTA beam line!
- Descoped to T&M work and “whatever we can get done” with vacuum system
- See next slide
- Bottom line: Ready for Booster turn-on by 10/2

## MTA Status

- All T&M work done
- Shielding re-stacked properly
- Still need to shield beam pipe to MTA
- Magnets set
- All cables pulled and terminated
- Further than we expected with vacuum work
- All spool pieces fabbed
- Most mounted
- Waiting on final alignment
- Small problem with height of Q74 (linac quad)
- Waiting on alignment crew working on TeV low beta (?)
- Bottom line:
- Will not be ready for beam MTA side not done
- MTA side not done
- Shielding not complete in pit
- Still hope to get Linac side under rough vacuum before end of shutdown
- After that, most work will not require Linac shutdown
- Will not delay turn-on by definition

## Booster Status

- Proton Plan Work
- 12 Correctors Installed
- Aligned
- Cabled
- Power supplies, controls, and database entries in place
- Waiting on Ox levels to come down before valving in.
- Booster under vacuum
- All ion pumps on
- Working on final application work for turn-on
- See later slide
- Non-proton plan work:
- Change leaky Q800 – DONE
- Booster West Gallery water upgrade – DONE
- Booster water routed through pBar de-Ox system - DONE
- Install new large aperture kickers in L2 and L12
- Will be needed to fit new correctors in those periods
- Not completed due to curse on entire project.
- RF work
- PM and partial solid state upgrade – DONE
- Bottom line: will be ready to turn on by 10/2

## Magnet Production Status

- Slowed during shutdown due to TD technician reassignment
- Production Status
- 15 Complete, with BPM installed
- 100% yield after BMA001 (inter-coil short)
- +5 potted and cleaned an in final production and testing
- +16 with coils available in various stages of production
- All cores on hand

## Start-up Philosophy: First, do no harm

- 2012

## General Guidelines

- Prior to the shutdown, the Booster was demonstrating ~all the proton capacity which it has promised through the start of high intensity NOvA operation in 2012.
- Our overriding goal will be to return to this level of performance *as quickly as possible*.
- Want tuning to have the same “look and feel” as before.
- Enhanced functionality of the new system (ramped HL correctors, distributed sextupoles) should not be used until we have demonstrated pre-shutdown performance without it
- i.e. we don’t want to use new features to compensate for tuning problems.

## C465 (old) vs. C473 (new)

- All dipole scale factors set to 1
- For DC operation, turn “off” and write directly to DAC
- Quad ramps control several in parallel, with individual DC offsets added in hardware

- DAC

- 465

- Will use scale factor to correct for transfer function
- For DC operation, set ramp to null and use OFFSET
- Quad control: load ramps in parallel and use offset registers for individual offsets

- DAC

- 473

## Pre-shutdown Corrector Operation for long straights

- Vertical Dipoles (vertical high-beta)
- Controlled by individual C465 ramp cards
- Horizontal Dipoles (vertical low-beta)
- DC levels
- Quads (normal and skew)
- Controlled in groups of six by C465 ramp modules, which were globally set with identical curves
- Individual DC offsets added in hardware for harmonic compensation.
- Sextupoles
- Not in corrector packages
- Chromaticity and harmonic compensation done by a small number of special purpose sextupoles, which will still be there.

## Initial Operation of New Odd Long Sections

- Vertical Dipoles
- Ramped as before
- Use C473 Scale factor for transfer function conversion
- Effectively redefine the “amp”
- Horizontal Dipoles
- Run DC, using offset C473 Offset register
- Preloaded with scaled pre-shutdown values
- DC Offset does not see scale factor
- Quads
- Run ramped portion globally with even ramped quads
- Use scale factor to compensate for different transfer function
- Use C473 offset register for DC term
- Done in hardware for even periods
- Will not see scale factor, so must modify harmonic applications.
- Sextupoles
- Initially off
- Transfer SEXTL functionality to new correctors
- Later: apply harmonic correction

## To do list

- Database entries – Triplett (DONE)
- Initial translation of old settings – Prebys (DONE)
- Parameter pages/mults (B2,3,6,11,12,etc) – Triplett, Pellico (mostly DONE)
- Ramp Applications (B14,15,16) – Waller (critical ones DONE)
- Harmonic Corrector (B71) – Prebys (DONE by 10/3)
- Closed Orbit (B87)
- Initial porting – Prebys (in progress)
- Upgrades for new ramps – Marsh (later)
- Ramped 3-bumps (B82) – Prebys (DONE)
- Aperture Scan (B75) – (later)