DOE Review

1
NuMI Commissioning

• Overview
• CD-4 Goals
• Planning
• Pre-commissioning activities
• Commissioning
• Summary

2
Overview

• Commissioning bringing the NuMI facility into a
  state of operation
• NuMI project activities
• Off-project activities such as Main Injector
  preparations
• This definition is slightly modified for the
  Technical Components
• Commissioning bringing the facility into
  operation using beam
• Checkout commissioning sub-systems prior to
  beam
• The MINOS detectors can be commissioned almost
  fully using cosmic rays

3
Overview

• The NuMI project has retained the responsibility
  for conducting and documenting all checkout and
  commissioning activities
• Coordinators will schedule these activities to
  maximize efficiency and minimize impact to
  accelerator operations
• NuMI Commissioning Coordinator Bruce Baller
• MINOS Near Detector Commissioning Coordinator
  Peter Shanahan
• Commissioning workshop held in April to define
  checkout and commissioning steps
• Attended by 35 participants from NuMI, MINOS,
  Operations, ESH, AD management

4
CD-4 Goals

• The NuMI Project Management Plan describes the
  Technical Commissioning Goals required to meet
  CD-4

5
CD-4 Goals

• We plan to follow the Main Injector model for
  documentation acceptance of goal achievement -
  Greg Bock memos to Steve Webster with supporting
  documentation
• Goal 1 ACNET parameter page showing proton
  intensity in NuMI beamline
• Goal 2 ACNET parameter page showing beam
  position in pre-target display showing beam
  position in the hadron monitor
• Goal 3,5 Detector measurements of pulse height
  and event length consistent with neutrino
  energies of 2 4 GeV
• Goal 4,6 MINOS displays of cosmic ray events in
  the near and far detectors

6
Planning

• NuMI checkout commissioning activities are
  tracked using MS Project
• Each task is assigned to a responsible person,
  approx start approx duration, notes, device
  status
• Pre-commissioning activities
• Main Injector Preparations (65 tasks)
• NuMI checkout (200 tasks)
• Administrative Approvals (15 tasks)
• Operations Preparations (20 tasks)
• Commissioning
• NuMI commissioning (60 tasks)
• Main Injector High Intensity (2 tasks need
  experience)
• Turnover to Operations (2 tasks)

7
Planning

• The commissioning plan includes several flavors
  of tasks
• Canonical off-project tasks that can be readily
  estimated, e.g. Design/build Main Injector
  Batch-by-Batch integrator
• Main Injector studies that are difficult to
  estimate (e.g. high intensity beam studies) but
  have a well defined result
• NuMI systems checkout tasks costed in the Master
  Schedule
• Administrative tasks, e.g. AD DOE approve MI
  safety envelope
• Checkout steps, e.g Put profile monitors into the
  beam
• The primary purpose of the plan is to ensure that
  all required tasks are identified and completed
  in the proper sequence

8
Pre-Commissioning Activities

• Description of pre-commissioning activities
• Main Injector Preparations
• NuMI Checkout
• Administrative Approvals
• Operations Preparations

9
Main Injector Preparations

• After commissioning, NuMI will operate in a
  mixed-mode with antiproton stacking at 120 GeV
• A 1.877 sec MI cycle will accommodate 6 batches
  of 3.3x1013 protons/cycle
• The Antiproton Source requires 1 batch of
  0.8x1013 protons to be achieved by slip-stacking
• NuMI will receive 5 batches for a total intensity
  of 2.5x1013 protons
• Antiproton beam requirements are tighter than
  NuMI
• Commissioning will be done on a special NuMI-only
  cycle

10
Main Injector Preparations

• High intensity studies (Damper system)
• Synchronizing Booster/MI injection (Booster
  Cogging)
• MI/NuMI event timing
• Multi-batch intensity measurement
• MI beam quality inputs to the NuMI Beam Permit
  System (BPS)
• Orbit and extraction issues

Planned for normal operation Not necessary to
meet CD-4
11
High Intensity Studies

• The bunch-by-bunch digital damper system (Run II)
  is needed for high intensity
• Instrumentation, RF cavities and kicker exist
• Longitudinal dampers operational now
• Transverse damper board in debugging
• Start multi-batch mode studies after board is
  fully tested (late June)
• Demonstrate high intensity multi-batch capability
  before the August shutdown

12
Multi-Batch Pbar Extraction
pbar batch
No cogging
Beam on the pbar target
No dampers
NuMI batches
13
Booster Cogging

• Booster notch needs to be syncd to the kicker
  and timed to MI batches
• Booster cogging turned on
• No losses with lt 3 Booster turns
• 20 loss with 4 turns

Revolution
Time (ns)
14
Pre-Commissioning Activities

• Description of pre-commissioning activities
• Main Injector Preparations
• NuMI Checkout
• Administrative Approvals
• Operations Preparations

15
NuMI Checkout

• Sub-system checkout tasks are included in the
  master schedule at a summary level to capture
  costs, resources
• The purpose of the Commissioning Plan is to
  ensure that every sub-system is fully checked out
  before commissioning begins
• Checkout is a multi-step process that culminates
  in the documentation of readiness by the L3
  manager in the NuMI Beamline electronic logbook
• The Commissioning Plan identifies a final
  checkout step (200) that requires documented
  completion
• Notes field defines the required checkout action
  for each sub-system (e.g. magnets Polarity check
  and power testing completed)

16
NuMI Devices

• Primary beam 49 magnets, 24 BPMs, 10 Profile
  Monitors, 2 calibration targets, 50 loss
  monitors, 4 total loss monitors, 2 toroids, 3
  beam vacuum systems
• Magnetic shielding check on HV101 string
• Target hall 6 thermocouples, Budal monitor,
  target helium flow, target/horn drive/position,
  RAW system status (for each module), chase
  cooling system flow/pressure
• Decay pipe vacuum status/pressure, RAW system
  status
• Absorber 8 thermocouples, RAW system status,
  leak rate study
• Hadron/Muon Monitors HV/LV status
• Beam Permit System 9 input summary checks
• Safety System 2 administrative checks

17
Pre-Commissioning Activities

• Description of pre-commissioning activities
• Main Injector Preparations
• NuMI Checkout
• Administrative Approvals
• Operations Preparations

18
Administrative Approvals

• Main Injector
• The MI Shielding Assessment has been revised to
  allow operation at 3.3x1013 protons/cycle
• In review now
• MI Safety Envelope will be reviewed and approved
  concurrent with NuMI Safety Envelope
• NuMI
• The NuMI Shielding Assessment and Safety Envelope
  will be discussed in Nancy Grossmans talk
• Commissioning plan includes Accelerator Readiness
  Review, final walkthrough by ESH committee,
  Running Conditions development and approval

19
Pre-Commissioning Activities

• Description of pre-commissioning activities
• Main Injector Preparations
• NuMI Checkout
• Administrative Approvals
• Operations Preparations

20
Operations Preparations

• Controls needs
• Add NuMI devices to the ACNET database
• Develop parameter pages
• Set up BPS and alarms limits pages, sequencers
• Define device list for data-logging
• Set up data logger
• Set up Beam Loss Budget Monitor and Beam Budget
  Monitor
• Administration Training
• Develop Search Secure procedures training
• Develop emergency response procedures training
• Define access requirements, threshold criteria
  for NuMI operation
• Develop and conduct operator training
• Define list of qualified experts

21
Commissioning

• Commissioning team composed of experts from NuMI,
  External Beams Dept CERN
• Use the existing NuMI Beamline electronic logbook
  for documentation
• Commissioning is divided into 11 phases
• The first 8 will be conducted on a special NuMI
  study cycle with a cycle time of 2 minutes
• Allows time for evaluation between shots
• The Beam Permit System (BPS) is administratively
  controlled by the Coordinator by the use of a
  golden file

22
Commissioning

• MI NuMI setup (4 days)
• Establish stable 1 batch MI beam (3x1011 ppp) on
  NuMI cycle
• Start NuMI ramps, ensure devices are reading
  back, data logging, BPS active, AutoTune working,
  NuMI kicker is OFF
• First Beam to NuMI (3 days)
• Enable kickers
• Tune beam to hadron absorber (AutoTune
  semi-automatic)
• Check function of loss monitors with profile
  monitors in/out
• Calibrate BPMs
• Aperture scans (4 days)
• Scan Lambertson 2 NuMI magnet apertures
• Declare BPS golden file
• Start tuning with correctors

Meet CD-4 Goal 2
23
Commissioning

• Horn Alignment (2 days)
• Scan horn 1 and horn 2 using neck and cross-hair
  alignment system
• BPM and hadron monitor response checked
  concurrently
• Target/Baffle Alignment (2 days)
• Target/baffle are scanned while in Low Energy
  (LE), Medium Energy (ME) and High Energy (HE)
  positions
• Hadron monitor response checked concurrently
• Raise Intensity Check Calibration (1 day)
• Increase intensity to 1x1012 protons/cycle
• Check instrumentation calibration

Meet CD-4 Goal 1
24
Commissioning

• First Neutrinos (2 days)
• Start horn pulsing log neutrinos in the near
  detector
• Beam-on and beam-off radiation surveys
• Multi-batch tuning (7 days)
• Increase number of batches
• Check ramp, instrumentation timing losses
• Reduce cycle time - Mixed-mode (1 day)
• Start NuMI/pbar mixed mode at 2 sec cycle time
• Main Injector High Intensity (30 days)
• Check ramp, instrumentation timing losses
• Turnover to Operations
• Document tunes operator training

Meet CD-4 Goal 3,5
CD-4 Met
25
Summary

• The April commissioning workshop was valuable
• Recommendations on philosophy, tips
• NuMI, Operations and AD management agree on all
  points
• The commissioning plan codifies all major and
  many minor tasks
• Plan will be updated regularly, posted on the web
  and tracked in weekly commissioning meetings
• We expect to achieve CD-4 after several weeks of
  commissioning