Linda R. Coney – 24th September 2009 MOM Update End of Sept Run Linda R. Coney 05 October, 2009

Linda R. Coney – 24th September 2009

MOM Update End of Sept Run

Linda R. Coney

05 October, 2009

Linda R. Coney – 5 Oct 2009

Outline

Taking Data Studies Done Target Operations Progress Made

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Recent Data Taking Program

Since working on the DAQ last week (see VC slides V.Verguilov): Positive beam particles:

300 MeV/c pions - 4000 target pulses (translates to about 330,000 particles used for calibrating the TOF system)

250 MeV/c pions - 350 target pulses (also for TOF) 200 MeV/c pions - 450 pulses (also for TOF)

300 MeV/c positrons - 1500 target pulses (calibration of CKOV and KL calorimeter) 150 MeV/c positrons - 1200 target pulses (calibration of CKOV and KL calorimeter)

330 MeV/c pions for study of Decay Solenoid effects on beam optics - 2000 pulses 444 MeV/c piplus -to- muon beam

to understand beam optics for producing muons - 500 pulses

Pion beam at 330 MeV/c – Decay Solenoid beam dynamics study Nominal setting at 550 A (3.1 T) 9 settings higher and lower in steps of 0.15 T Only required ~60 target pulses/point to get sufficient counts in TOF0

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DS Study

Pion Beam at 330 MeV/c – Decay Solenoid beam dynamics study Nominal setting at 550 A (3.1T) 9 settings higher and lower in steps of 0.15 T 100 target pulses/point to get sufficient counts in TOF0

Run 1121 DS current down 0.30T

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DS Study II – Positive Particles

Run 1122 DS current lower 0.15T Run 1123 Nominal DS current

Run 1124 DS current up 0.15T Run 1125 DS current up 0.30T

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Recent Data Taking Program II

Since working on the DAQ last week (see VC slides V.Verguilov): Friday – switched beamline polarity Now running Negative beam particles:

300 MeV/c pi- : 2800 target pulses (calibrating the TOF system)

300 MeV/c electrons - 1500 target pulses (calibration of CKOV and KL calorimeter) 150 MeV/c electrons - 1200 target pulses (calibration of CKOV and KL calorimeter)

330 MeV/c pi- for particle rate vs beam loss study

50mV, 100mV, 200mV, 300mV, 400 mV, 500 mV losses – 400 pulses/point (2400)

444 MeV/c piplus -to- muon beam - 1500 337 MeV/c piplus -to- muon beam – 1550

Optimization of Upstream Beamline

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Recent Data – 300 MeV/c pi-

Run 1172: 300 MeV/c pi-

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Recent Data – 444 MeV/c pi- to mu-

Run 1176: 444 MeV/c pi- to mu- (Saturday Oct3)

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Recent Data – 444 Mev/c pi+ to mu+

Run 1163: 444 MeV/c pi+ to mu+ (Thursday Oct1)

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Muon Particle Rate Study

An initial study of muons in TOF1 as a function of beamloss was also done using a 337 MeV/c at target pi- to mu- beamline

100mV - 15 particle triggers/spill TOF0 - 4.2 muons/spill in TOF1 (assuming all hits are muons)

200mV - 34 particle triggers/spill TOF0 - 8.6 muons/spill TOF1




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Optimization of Upstream Beamline

Simulation – triangles Data from Sunday - circles

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Target Performance

Continues to do well – no problems Stopped at 50,000 pulses at end of running Thursday Sat/Sun – went on to final count of 62,650 Target depth Beam loss over time 200 MeV/c pi+ Inspected Sunday

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Target DAQ

Target DAQ Moving closer

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Target Run Information

Beam Loss/target position pi- to mu- beam 611 mV BCD = 28.4

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Target Run Information II

Beam Loss/target position/dip timing pi- to mu- beam (Sat) 611 mV BCD = 28.7

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Detectors

KL installed/bolted to TOF1 Incorporated into DAQ again Problem with one FADC module – 6 channels on top of detector

TOF0 ch. 17 PMT still not reading out All FADCs (except PMT 17) look good

Plots: 300 MeV/c electrons FNAL BPMs not running now

Hardware problem probably – need check into veto/load signals

PMT 17 PMT 18

FADCs

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Recent Data: TOF Calibration

Beginning to calibrate TOFs Last year’s data……..This year… Making progress..need more data..

2009: 300 MeV/c more statistics

2009 330 MeV/c

2008

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Operations I

eLOG Moved to IIT Works great! Fantastic! Temporary solution while work w/RAL networking to sort out heplnw17

Magnets: D2

magnet H2O trips, Willie increased water flow slightly on access to DSA Wed No problems since

Q4 MPS water flow trips – Thursday every 45 minutes during running Swapped out flow sensor Friday Now ok – no trips over weekend Danfysik will replace all flow sensors

Polarity switched Capacity of distribution board checked

Ok – need few new fuses – may still want upgrade Slow ramp of magnets –

Software written Tested and did not work – ongoing

Beamstop not always cooperative – possible faulty controller connection

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Operations II

PPS Need rack to RAL John Alexander to RAL to integrate DSA into ISIS system – TBC

Shifters Many thanks to my shifters

especially Pierrick Hanlet, Henry Nebrensky, and Ray Gamet here for 1 week each! Working very hard for MICE

Alarm Handler Still need to sort out sound card Need Decay Solenoid PVs into alarm handler to assist monitoring Need DAQ variables into Alarm Handler

Need to understand ISIS beam loss vs MICE in MLCR What exactly defines our limits?

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Next

ISIS shutdown Oct 5 – Nov 1 Machine Physics period starts Nov 2 – need shifters User Run ~Nov 9 through Dec 20 – need shifters Next User Run – Feb/March 2010

Calibrate detectors Study effect of proton absorber? Build during shutdown Install luminosity monitor

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Conclusions

Within the last month: We are running again New target Higher loss limits Decay Solenoid Operational! Routinely used. Detectors working Good NEWS –

Learning a LOT Last year < 50 particles/spill, Now: averaging 160 – 200 Running with negative or positive particles We have seen MUONS!

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Documents

Linda R. Coney – 24th September 2009 MOM Update End of Sept Run Linda R. Coney 05 October, 2009