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Activation Study - 28/29th June 2014

The purpose of the run is
  1. to measure the increase in activation of ISIS due to MICE target running at MS/64 and 4V beamloss (comparison with February 2013).
  2. Perform a TOF calibration
  3. Perform a CKOV HV scan and (time permitting) a momentum scan to measure CKOV momentum threshold

Daily schedule

Month Saturday 28th Sunday 29th Sunday 29th
estimated time 4 - 6pm 9am - 5pm 5pm - 1 am
MOM Ryan Bayes Ryan Bayes Ryan Bayes
Lead shifter Searcher 1: Pierrick Hanlet (TBC) Yordan Karadzhov Pierrick Hanlet
Shifter Searcher 2: Chris Heidt (TBC) Chris Heidt Maryian Bogomilov
BLOC/Target expert n/a Henry Nebrensky Henry Nebrensky
SOC n/a Durga Rajaram Durga Rajaram
Experimenter n/a Dean Adams / Yordan Dean Adams / Yordan
Aim Check beamline, Close Hall Take Data Take data
Beam? No Yes Yes
Additional Personnel

SOC Shifts

N/A

Shifter hours of service:

  • Saturday:
    • Due to CM39, probably cannot lock up hall on Friday
    • ~16:00 - search and lock Hall
  • Sunday:
    • Shift 1 - arrive 9:00 am - finish 5:00 pm
    • Shift 2 - arrive 5:00 pm - finish 1:00 am

Data Requested

  • TOF Calibration (Karakzhov)
  • CKOV tuning data (Cremaldi/Soler)

N.B. Planning should assume Decay Solenoid will not be available.
N.B. As Hall Manager is on long-term sick leave, I'm not sure we can tweak cooling water settings. Avoid scheduling high-momentum runs likely to trip off Q4.
N.B. Proton Absorbers - pneumatic system has operated successfully, but not yet soak-tested; treat as at-risk.

Beamline Configurations

We expect to be running with 4V beamloss and beam bump active.

Propose to use an electron run for TOF calibration.

Reference Run without Decay Solenoid

Particle Species p at Tgt p@D1 p@D2 p@Tof0 Proton Absorber Q1 Q2 Q3 D1 DS D2 Q4 Q5 Q6 Q7 Q8 Q9 Similar Run(s)
MeV/c MeV/c MeV/c MeV/c mm A A A A A A A A A A A A DAQ run #
pion 272.42 268.67 265.98 143.4 29 57.8 105.6 64.6 202.8 --- 100.4 176.8 237.1 157.2 157.6 238.5 203.7 5729

TOF Calibation run

Number of pulses Beamloss Particle Species p at Tgt p@D1 p@D2 Proton Absorber Q1 Q2 Q3 D1 DS D2 Q4 Q5 Q6 Q7 Q8 Q9 Similar Run(s)
# V mm A A A A A A A A A A A A DAQ run #
25000 4 Positron 300.0 259.7 249.58 29 56.35 102.7 62.65 195.72 --- 98.59 163.16 218.79 114.14 83.40 125.70 80.06 1678

CKOV HV scan run

To be carried out simultaneously and parasitically with the TOF calibration run on electron beam as shown above
Previous run to be split into 5 runs with 5000 pulses each run, scanning in a range of +- 50 V around nominal settings for CKOV HV settings

Run type Number of pulses CKOVa1 CKOVa2 CKOVa3 CKOVa4 CKOVb1 CKOVb2 CKOVb3 CKOVb4
# V V V V V V V V
Default CKOV HV 5000 1610 1520 1570 1625 1540 1590 1540 1495
Default CKOV HV - 50V 5000 1560 1470 1520 1575 1490 1540 1490 1445
Default CKOV HV - 25V 5000 1585 1495 1545 1600 1515 1565 1515 1470
Default CKOV HV + 25V 5000 1635 1545 1595 1650 1565 1615 1565 1520
Default CKOV HV + 50V 5000 1660 1570 1620 1675 1590 1640 1590 1545

CKOV momentum scan run

If there is still time to perform more runs, return the CKOV HV to its default settings. Then we will do a momentum scan on the pion momentum. There should be enough statistics with only 2000 actuations each run.

Number of pulses Particle Species p at Tgt p@D1 p@D2 Proton Absorber Q1 Q2 Q3 D1 DS D2 Q4 Q5 Q6 Q7 Q8 Q9 Similar Run(s)
# MeV/c MeV/c MeV/c mm A A A A A A A A A A A A DAQ run #
2000 pion 300 268.67 265.98 29 57.8 105.6 64.6 202.8 --- 100.4 176.8 237.1 157.2 157.6 238.5 203.7 5729
2000 pion 325 321.5 319 83 69.1 126.3 77.31 246 --- 119.6 212.4 284.8 188.9 193.7 293.2 250.6 5439
2000 pion 350 346.58 344.14 83 74.5 136.1 83.3 267.7 --- 128.8 229.2 307.4 204 210.6 318.8 272.5 5444
2000 pion 375 371.6 369.2 83 79.8 146 89.4 290.4 --- 137.9 246 330 218.9 227.3 344.1 294.2 5442
2000 pion 400 396.7 394.3 83 85.2 155.8 95.4 314.3 --- 147.1 262.8 352.5 233.9 244 369.4 315.8 5440
2000 pion 425 421.7 419.36 83 90.55 165.6 101.38 339.36 --- 156.26 279.61 374.97 248.84 260.49 394.43 337.23 5437

Preparation

We will run to TOF1 so need to fully secure the MICE Hall. Placing fencing, signage, and Search & Secure – 2 hrs on Saturday

Target activity

  1. Work through the target check list and get the target operational with the target frame raised. – 30 mins
  2. Check that the target’s insertion aligns with the correct ISIS spill. The target will be operating at the double dip rate. – 10 mins
  3. Stop operating the target and lower the target frame. Ensure that the target insertion depth is small. (Large BCD) – 10 mins
  4. With the beam bump on steadily increase the insertion depth (reduce BCD) until we obtain the required beamloss (4 V max => 3 V avg).
  5. (check we have 2 ms headroom for increasing target delay at MS/64 without affecting following pulse) done previous week
  6. Operate target continuously for 14 hours. – 14 h

DAQ testing

  1. Confirm Online Monitoring, Online Reconstruction are OK.
  2. TOF calibration run?

Finish

  • Shutdown target and re-open Hall for Monday