# Presentation: 246659

## Recycler Startup 

- Cons Gattuso

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- C. Gattuso

## Shut Down Work

- Recycler Work
- Cooling Tanks Repaired
- Cooling tanks 7,8 and 11
- Thermal couple feed through replaced
- Internal water line braze joints reworked
- LEP Corrector Replacement
- RR30 and 60 straight sections
- Additional Shielding Added
- 620 and 213 MI Dipole Buss expansion regions
- Flying Wire installation
- 620 Region
- Re-work of the 30 straight sections
- RF High level Modifications
- Replaced BPM supports at the Q332 locations
- Vacuum work in the 60 straight section

- C. Gattuso

- NuMi Shutdown Work
- Completed installation of the Beam Line
- Dipole magnets shielding completed
- Additional Beam Pipe Shielding added
- Main Injector
- Beam pipe alignment in the injection extraction regions
- Reduce losses in the MI, some hot spots >1 rem/hr
- E-cool installations
- Compensations for main 90/180 degree bends
- Buss rework in the MI-30 straight sections

- C. Gattuso

## Goals for the week of 11/22/04

- Injection Proton Injection line tune up
- Time in ALL RR Kickers
- 7 Bunch Mode MI (2.5 Mhz RF structure)
- Set MI and RR Counter waves
- 40 Bunches No extraction Into RR
- Phase in the RF system
- 7 Bunch Mode MI (2.5 Mhz RF structure)
- Circulating Beam
- Establish Golden First orbit
- 7 Bunch Mode MI (2.5 Mhz RF structure)
- Establish  circulating beam
- 7 Bunch Mode MI (2.5 Mhz RF structure)
- Set Tunes and Chromaticity to Pre shutdown Settings
- Instrumentation
- Flying wire commissioning
- 7 Bunch Mode MI (2.5 Mhz RF structure)

- C. Gattuso

## Commissioning/Running Plan

- Commissioning (Recycler)
- Start on Nov. 22 (Monday)
- Shifts
- Manned by 2 studiers
- Two shifts per day
- AM shift (0800-1400)
- PM shift (1400-2200)
- Pasta shift (0400-0800)
- Milestones/Criteria
- Completion 1/28/05
- Running Plan (after 1/28/05)
- Mixed Mode Operations (operator run)
- Support E-cool Commissioning
- On Call personnel

- C. Gattuso

## Commissioning Criteria

- C. Gattuso

## Milestones

- Vacuum Performance					12/6/04
- Vacuum and Machine Admittance				12/9/04
- "Mi to RR Trans Eff, >85%, Round trip <3 pi growth“		12/14/04
- Rapid Stacking Performance with 100E10			12/20/04
- Equilibrium properties at 100-200E10			1/11/05
- Recycler Rapid Transfers  Commissioned			12/28/04
- Extraction Commissioned					1/17/05
- Recycler commissioned for Electron cooling/Mixed Mode Inter.	1/28/05

- C. Gattuso

## Major Studies Lists

- Orbit Studies
- Flash/Closed orbit (Golden Orbit)
- Ramp compensation (Correctors & QCL)
- Lattice Measurements
- Optics measurements for the ring
- MI-30 insert effects
- Under stand Coupling/Tune/Chrom.
- Instrumentation
- Flying wire commissioning
- Cooling Studies
- Response of the system after repairs
- Damper Studies
- Determine Damper characteristics
- RF
- Harmonic issues

- C. Gattuso

## Mixed Mode of Operations

- What Level we will be involved with Collider Operations
- store i.e.
- 1-6 batches from the Recycler (4-24 2.5 Mhz bunches)
- Ratio IRecycler/IAccumulator is governed by:
- Recycler phase space density (cooling)
- Recycler transfer time (Rapid transfers)
- Accumulator stacking rate
- Reasons
- Recycler has completed first phase of commissioning, moving in to operational mode
- Luminosity enhancement – larger amount of pbars for smaller emittances
- ~20% increase to initial luminosity using the Mixed Mode vs. Accumulator alone
- Flexibility in the Run II Upgrade schedule
- Natural merging of commissioning of electron cooling

- C. Gattuso

- C. Gattuso

## Recycler Long Emitt Vs. Intensity

- C. Gattuso