MICE VC Aug '10J.S. GraulichSlide 1 MOM report o Achievements Since CM27 o Daily Operations o Run...

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


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


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


-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


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


D1 Scan

D2 kept constant, selecting the same momentum as for negatives (without proton absorbers)

TO

F1

rat

e (n

orm

ali

zed

to

Lu

mM

on

)

D1 Current / Nominal

By Chris Heidt


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)

11

Online Reconstruction•Basic Particle ID using TOFs

— e, , pions, protons

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


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)


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


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


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)


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


Summary

A lot of data taken A lot of Progress in MLCR Only a short time left Join the fun !

MICE VC Aug '10J.S. GraulichSlide 1 MOM report o Achievements Since CM27 o Daily Operations o Run...

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