MICE VC Aug '10 J.S. Graulich Slide 1
MOM reportMOM report
o Achievements Since CM27
o Daily Operations
o Run Plans
o Summary
Jean-Sebastien Graulich, Geneva
MICE VC Aug '10 J.S. Graulich Slide 2
Achievements since Achievements since CM27CM27
A lot of Data Taken: A lot of Data Taken: 200 000 Target Actuations200 000 Target Actuations 9 000 000 Particle Triggers9 000 000 Particle Triggers
Emittance – Momentum Matrix ScanEmittance – Momentum Matrix Scan Beam line studies (Q. Scans, D. Scans, Beam line studies (Q. Scans, D. Scans,
DS Scans, Neutrals, etc…) DS Scans, Neutrals, etc…) Online Reconstruction allows Online Online Reconstruction allows Online
Tuning of the beamTuning of the beam DAQ Upgrade and included in Alarm DAQ Upgrade and included in Alarm
HandlerHandler Configuration Data Base in useConfiguration Data Base in use
MICE VC Aug '10 J.S. Graulich Slide 3
Data Taking
From 8:00 to 20:00From 8:00 to 20:00 Every day ISIS makes Rest on Sunday (and Saturday too )
Start-up procedure well trainedStart-up procedure well trained Less than 30 minutes
Every day starts with a reference runEvery day starts with a reference run 400 pulses in 6 +/-200 M0 At fixed target delay and dip depth
A target “Calibration” run taken dailyA target “Calibration” run taken daily All Hardware found stableAll Hardware found stable
Target, Detectors, Magnets, etc
MICE VC Aug '10 J.S. Graulich Slide 4
-p Matrix
Several Beam line optics Prepared by Marco Apollonio Available on MICE Wiki (Chris Tunnell)http://mice.iit.edu/wiki/index.php/Beamline_Optics
M0 and M1 correspond to different way to obtain the right distribution in
phase-space after the diffuser accordingto G4BeamLineMain Goal: Comparison Data / Simulation
-p Matrix ScanAs on July 30
Negative polarity
140 200 240
M0 M1 M0 M1 M0 M1
3 39,434 57,763 57,361
6 52,440 45,284 61,652 50,522 39,417 45,942
10 42,490 53,006 50,446 27,814 43,870 45,212
Positive polarity
140 200 240
M0 M1 M0 M1 M0 M1
3 80,160 171,600 236,630
6 104,040 103,042 302,897 225,200 120,911 77,177
10 85,090 98,460 120,000 80,000 105,172 68,576
By Chris Heidt
MICE VC Aug '10 J.S. Graulich Slide 6
Beam Line Studies
See previous talks Summer Blot, Rob Fletcher
Some important results Quad scans:We do observe X and Y offsetsNeed to be investigated NeutralsWe do observe neutrals causing Triggers in TOF1Even if all magnets are Off !Only when we dip the target ! (scales with beam
loss)Only when the beam blocker is open ! Proton absorber doesn’t affect the trigger rate
MICE VC Aug '10 J.S. Graulich Slide 7
D1 Scan
D2 kept constant, selecting the same momentum as for negatives (without proton absorbers)
TO
F1
rat
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orm
ali
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to
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on
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D1 Current / Nominal
By Chris Heidt
MICE VC Aug '10 J.S. Graulich Slide 8
Online Tuning
Online Optimization Chris Rogers and Mark Rayner spent 2 days in MLCR A lot of improvement in Online Software Work still in progress
Main Goal Comparison data /Simulation (G4MICE)
Put stress on two issues CDB entry available only at the end of the RUN !
No way to use Quad currents from CDB Emphasize the need for CAM data in data streamNote: Already available, miss unpacking (the guy in charge is informed…)
DAQ must be stable… Huge progress achieved last week (faulty board replaced)
9
Online Monitoring •Online Monitoring running — Discovered lower
hits in TOF0 when triggered on TOF1
Slides From Linda Coney
10
Online Reconstruction •Selection of Good Muons
— Good = green, bad = red
•Reconstructed Momentum (blue)
12
Online Reconstruction•Phase Space Plots Using TOFs (x, Px) (y, Py)
— TOF0 (top plots)— TOF1 (bottom plots)
13
Online Data Quality Check•TOF Monitor – y, x, combined distributions for TOFs
— TOF0 (top plots)— TOF1 (middle plots)
o Looks like one slab noisy— TOF2 (bottom plots)
14
Online Data Quality Check•Time of Flight plots
— TOF1-TOF0 (top plot)— TOF2-TOF1 (middle plot)
o Note separation capability
— TOF2-TOF0 (bottom plot)
•Run 2595— TOF Calibration positron
beam (300 MeV/c at target)
15
Online Reconstruction Plots•Run 2595
— TOF Calibration positron beam (300 MeV/c at target)
— Phase Space plots— Momentum
reconstruction
16
Online Applications•Many thanks to Mark Rayner, Chris Rogers, Vassil Verguilov— For writing the reconstruction applications, getting the data
reader to work online, setting up the environment of OnReco01, getting the reconstruction to work online, updating to the most recent TOF calibration & changing the fake scatter plots to colors!
JSG Comment: hard to look at all this at the same time
MICE VC Aug '10 J.S. Graulich Slide 17
DAQ System UpgradeDAQ System Upgrade
Moved to new system on July the 17thMoved to new system on July the 17th Standard OS (Centos 5.4) DATE Updated James’ Software installed everywhere Controlled Installation Procedure
Important ConsequencesImportant Consequences No more Spill Mismatches ! (or only very rarely) DAQ can now talk to EPICS
DAQ sends error to Alarm Handler when No Triggers (ISIS is down, or target is stopped, or HV is OFF, etc…)
Too Many Triggers (event to big. It will also stop if it happens too often)
Mismatch reflecting serious problem (1 trigger difference is OK)
MICE VC Aug '10 J.S. Graulich Slide 18
CDB in Use
We can now reload the magnet configuration from a previous run by a single click !
That really helps Many Thanks to David Forrest and James Leaver
Should serve as an example Was available for more than 6 months !!! Information was just not passed
Please use CDB offline as well Important Note:
All variables not available through EPICS are set to zero
Use spread sheet for the time being
MICE VC Aug '10 J.S. Graulich Slide 19
Daily Operations
Procedure revised We don’t need to switch the Target Power
Electronics OFF for Controlled Access to the Hall
Saves time Daily walk through revised and simplified
More and more items are archived and/or under Alarm
Network Printer Available in MLCR Also accessible by USB
MICE VC Aug '10 J.S. Graulich Slide 20
Run Plans
MOM failed to publish it in due time Was discussed on Mondays (after MICO) We have covered well the original Plan for this
user run 4 working days left + Machine Physics We still want to do
Target Delay Studies, including Spill Profile (Rob Fletcher) Pion Data with Downstream Quads Off
Straight lines have advantages… Quads and Dipole Scans with Pion beam
Smaller Momentum Spread (“same” momentum in D1 and D2)
We’ll continue 8:00-20:00 running + Sunday afternoon (Target Delay)
MICE VC Aug '10 J.S. Graulich Slide 21
Machine Physics
Agreement for Exploring High Beam loss: Up to 10V !!! Testing Target Delay Operational Range at 3V
beam loss
Not possible Activation study
Plan Saturday August the 14th (MOM = Roumen Tsenov) Start at 16h30 and We have midnight permission… Start with ISIS at 50 Hz, scan target Delay (1 hour) Redo Adam Dobbs’ study sith positive Push it to *very* high beam loss and break record