Activation Study - 28/29th June 2014¶
The purpose of the run is- to measure the increase in activation of ISIS due to MICE target running at MS/64 and 4V beamloss (comparison with February 2013).
- Perform a TOF calibration
- 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¶
- Work through the target check list and get the target operational with the target frame raised. – 30 mins
- Check that the target’s insertion aligns with the correct ISIS spill. The target will be operating at the double dip rate. – 10 mins
- Stop operating the target and lower the target frame. Ensure that the target insertion depth is small. (Large BCD) – 10 mins
- With the beam bump on steadily increase the insertion depth (reduce BCD) until we obtain the required beamloss (4 V max => 3 V avg).
(check we have 2 ms headroom for increasing target delay at MS/64 without affecting following pulse)done previous week- Operate target continuously for 14 hours. – 14 h
DAQ testing¶
- Confirm Online Monitoring, Online Reconstruction are OK.
- TOF calibration run?
Finish¶
- Shutdown target and re-open Hall for Monday
Updated by Nebrensky, Henry over 8 years ago · 47 revisions