Switchyard Notes

  1. Instructions for starting extraction to SY Absorber
  2. Establish Neutrino Muon
  3. Establish MTest Mode of Operation
    1. 120 GeV Proton Mode
    2. 33-66 GeV Pion Mode (typically used for >32 GeV only)
    3. 1-32 GeV Low Energy Pion Mode
    4. Muon mode
  4. MTest target and absorber controls
  5. MCenter
  6. Intensity controls
  7. Swics Notes
  8. Beam loss Displays
  9. Useful links and Temporary Notes
  10. What can experimenters tune?


I. Instructions for starting extraction to SY Absorber
  1. Run the Switchyard Sequencer S48 for "Establlish Slow Extraction" aggregate
  2. In this aggregate the following actions will take place via sequencer or operator:
    1. Insert a $21 event, module 196 coupled, in timeline.
    2. Reset Switchyard beam permit on S68
    3. Set intensity 1 turn, 13 bunches on B4 $13 (booster event 13, 'TeV Fix').
    4. Look at Switchyard loss plot #7 and Beamline SWICs
    5. Check settings of P1, P2, P3, Transfer Hall and Enclosures B, and C
    6. Check SWIC S106 for a beam profile
To turn off slow spill, execute S48 sequencer file 'Disable Slow Extraction', then take $21 event out of the time line
II. Establish Neutrino Muon
  1. Run the Switchyard Sequencer S48 for "Establlish Slow Extraction" aggregate
  2. Run the next aggregate "Establish FT User Config"
  3. In this aggregate please choose an option that includes Neutrino Muon
  4. Reset Switchyard beam permit on S68
  5. Set intensity 1 turn, 13 bunches on B4 $13 (booster event 13, 'TeV Fix').
  6. Check losses on S42 Switchyard loss plot #1 and S44 Beamline SWICs
  7. Check SWIC NM3TGT for a beam profile
  8. Increase batches, bunches and turns for desired beam intensity
  9. Return Meson beam if they were running

III. Quick table of MTest modes
Column 1:
120 GeV Proton Mode
Column 2: 33-66 GeV Pion Mode (typically used for >32 GeV only)
Column 3: 1-32 GeV Low Energy Pion Mode



MTest Mode Proton Mode 120 GeV Pion Mode Upstream Target 4-64 GeV Low E Pion Mode Downstream Target 1-32 GeV
Pinhole Collimator
F:MT3PUV
1733/ IN
5317/ OUT
5317 /OUT
F:MT3PDV
1678/ IN
5187/ OUT
5187/ OUT
F:MT3PUH
584/ IN
919/ OUT
919/ OUT
F:MT3PDH
667/ IN
863/ OUT
863/ OUT
F:MT3PUV is the Pinhole Out A input and F:MT3PDV is the Pinhole Out B input in the MTest Primary logic
Jaw Collimator
F:MT4CV1
50mm
50mm
50mm
F:MT4CH1
50mm
50mm
6mm
F:MT4CV2
50mm
50mm
50mm
F:MT4CH2
50mm
50mm
50mm
Targets
F:MW1TGT
IN required
IN required
OUT
(C*.)
(C*.)
(.*O)
F:MT4TGT
OUT
OUT
IN required
(.*O)
(.*O)
(C*.)
SWICs HV
F:MT3PWV
2200
2200
80
F:MT4PWV
2200
2200
80
Absorbers
F:MT4PB
OUT
OUT
OUT
F:MT6AB1*
OUT
OUT
OUT
F:MT6AB2*
OUT
OUT
OUT
F:MT6AB1 and F:MT6AB2 need to be in for Muon/Electron mode
Energy Changing Info (also see S18 MESON 30) Gauss Probe Values
To compare any file with the "golden file or SY expert file" SY Status ('SY eXpert file')

III-A 120 GeV Proton Mode- file 400
  1. Follow instructions for starting extraction to SY Absorber
  2. Check that Meson Test Interlocks are satisfied in the 120 GeV Proton Mode.
  3. Confirm a $21 event (module 80) in the timeline. This is needed to read some of the device settings on the Parameter page
  4. Run the next aggregate "Establish FT User Config"
  5. In this aggregate please choose an option that includes a Meson User
  6. Run the "MTest Mode Config" aggregate for the desired Mode and Energy for the Primary MTest User
  7. Check losses in Meson Beamline, any loss greater than 1 R/s, call an expert.
  8. Check the MTest SWICs look like the pictures links below. adjust the number of bunches per user request. If further reduction in intensity is required, slightly misalign the pinhole or misteer the beam on the pinhole slightly.
  9. Phone MTest x2460 or x2459 and inform them beam has arrived. Explain that they must inform the MCR if they are leaving the MTest area
  10. In case of any problems call Rick Coleman

III-B 33-66 GeV Pion Mode (typically used for >32 GeV only)
call experts not used very often

III-C 1-32 GeV Low Energy Pion Mode
  1. Follow instructions for starting extraction to SY Absorber
  2. Check that Meson Test Interlocks are satisfied in the Low Energy Pion Mode.
  3. Confirm a $21 event (module 80) in the timeline. This is needed to read some of the device settings on the Parameter page
  4. Run the next aggregate "Establish FT User Config"
  5. In this aggregate please choose an option that includes a Meson User
  6. Run the "MTest Mode Config" aggregate for the desired Mode and Energy for the Primary MTest User
  7. Check losses in Meson Beamline, any loss greater than 1 R/s, call an expert.
  8. Check the MTest SWICs look like the pictures links below. adjust the number of bunches per user request. If further reduction in intensity is required, slightly misalign the pinhole or misteer the beam on the pinhole slightly.
  9. Phone MTest x2460 or x2459 and inform them beam has arrived. Explain that they must inform the MCR if they are leaving the MTest area
  10. In case of any problems call Rick Coleman
  11. If desired check Energy via file number

III-D Muon Mode
Follow the directions for setting up the appropriate Pion Mode above then close F:MT6AB1 and F:MT6AB2 by turning these devices off from digital control.

IV. MTest target and absorber controls
F:MW1TGT
    10" of Aluminum in downstream M01, attenuates beam in Proton Mode
    To set in: set to -1, reads C*.
    To set out: set to 1, reads .*O
F:MT4TGT
    12" of Aluminum, target for Low Energy Pion Mode
    To set in: interrupt digital status- PLUS - F:4TGTCP reads 3363
    To set out: interrupt digital status- MINUS - F:4TGTCP reads 0
F:MT4PB
    1/4" of Lead mounted in bayonet swic in MT4, used to reduce electrons.
    To set in: set to -1, reads C*.
    To set out: set to 1, reads .*O
F:MT6AB1,2
    1.5 m of iron each, used as beam dump for muon running, located in large yellow iron shield between upstream and downstream MT6 sections
    To set in: interrupt digital status- OFF reads C..
    To set out: interrupt digital status- ON reads ..O

V. MCenter

VI. Splits/Intensities/Bunches
MSEPAL = 360 mils for SY Absorber/Neutrino Muon only running.
MSEPAL = -250 mils for Meson only running.

FSEPAL = -440 mils fixed in this position for MTest only running.

MTest beam reduction

  1. 120 GeV Proton Mode
    1. The beam on the pinhole can be tuned (for example deliberately misaligning to reduce intensity)
    2. Adjust F:MT3PDH to vary intensity on F:MT6SC1. Increasing value will diminish counts.
  2. Low Energy Pion mode
    1. The momemtum collimator F:MT4CH1 can be used to control intensity
    2. It will also reduce momentum spred in the beam as it is closed down

VII. Swics Notes
The Switchyard, Neutrino Muon, and Meson SWICS can now be set to scan once or twice a spill:
SWIC scans Once Twice
width
800 ms
200 ms
sample
35
34
read delay
1.5 sec
0.2 sec
1996 SWIC Application Reference (when we extracted from the Tev to SY)
See Paul's note:- Tue Feb 8 14:53:29 comment by...Paul Allcorn ext beam elog Also: The ACNET device S:SnnnVM (or ...HM) will work if the sequence is set to type zero for both scans. See Kobilarcik's not of 27Apr05 -- trk

VIII. Beam loss Displays
S42 subpage 1 , select $21 event, enable SA, Plot Losses for Neutrino Muon
S42 subpage 7 , select $21 event, enable SA, Plot Losses for Meson

IX. Useful links and Temporary Notes

MI-52 Resonant Extraction SY120 Rookie Book
SY120 Tuning Guide
SY120 Schematic
SeaQuest Spill
NeuMuon Loss plot
SeaQust Spill Plots

X. What can experimenters tune?
The people approved to tune SY120 beams are restricted to members of the External Beams Department and the Operations Deparment with no exceptions currently.

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