Transcript RHICf_meeting_20161018_sakox

RHICf Japan meeting
General status
Takashi SAKO
18 (-19) Oct 2016
@ Nagoya University
Schedule until run (+ end)
Sep 2016
Preparation in labo.
Sako, Nakagawa, Junsang, Minho, Satoken
Oct 2016
Installation rehearsal
Goto, Nakagawa, Menjo, Junsang, Minho,
Satoken
Nov 2016
Installation and commissioning
Goto, Nakagawa, Sako, Junsang, Zhou, Minho,
Satoken
Feb 2017
Commissioning with collisions
Same as above + Ueno, Shinoda
Mar 2017
Commissioning with collisions
Apr 2017
Final tuning
May 2017
Physics data taking
Dec 2016
Jan 2017
Jun 2017
Jul 2017
Uninstallation
(Graduate students active in 2017 are marked in red)
Top panel modification
and manipulation
Bill: RHICf can stay at garage if we confirm it does not interfere with ZDC
JH: understands radiation damage must be considered
RHICf must decide if we WANT to stay there until run
3
Idea updated on 15-Sep-2016
FINAL PLAN
Electronics, Power Supply, Frontend PC
（Network ports: 5 + few spares）
RHICf detector
This is original plan
Terminal & analysis PCs
(somewhere in the room)
（Network ports: 3 + few spares）
MIDAS and storage server
(somewhere in the room)
(1 Network port)
Preparation for installation
• Mechanical check => successful on 3-Oct.
• Cabling
• Length measurement by JH, Steve and Sako = 100 ft (30m)
including 10% margin
• Cables are ordered, and to be ready by the end of Oct (4,000
USD covered by Nichibei budget)
• Extension HV cable (20m) ready in Nagoya
• IP addresses for network devices are already assigned
(local DAQ network. How to connect to outside?)
• Installation and commissioning works were reviewed
and approved in the STAR OP meeting on 15-Sep
Discussion with Ogawa on 14-Sep
• Quick asymmetry analysis using ZDC data
• ZDC counting rates are recorded independently from the triggered
events, and usually these are used for quick analysis of polarimeter
• There are various channels taking into account of the SMD information
• Ernst takes care of this analysis and participation of RHICf members will
be the best way
• Nakagawa-san will contact to Ernst first
• Quick analysis of RHICf-STAR data
• Usually STAR keeps event built data in the local disk at 10Hz rate. Full
data is stored in the remote disk and they do not access it for a quick
analysis.
• They have a possibility of increasing 10Hz to more because of low event
rate and short operation period (Jeff will take care)
• RHICf must first decide what event rate we need for quick check.
• Suzuki-san’s study of RHICf-ZDC correlation may be useful.
• Zhangbu agreed RHICf members have STAR account to access STAR data
(14-Oct).
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MC home works
• How much event rate is necessary to quick check
the common data taking with STAR?
• Correlation between RHICf and ZDC may be useful
• Can we stay at garage if it is allowed?
• Need energy deposit per collision at the shower
maximum
• 100 Gy after integrating over expected integral
luminosity is limit
(After 100Gy, GSO scintillator gradualy increases output,
and it saturates at +20% above 1kGy. ‘Damage’ appears
only above 1MGy.)
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Sako Goto Nakagawa Junsang Minho Zhou Satoken
Plans from
November
30-Oct Sun
31-Oct Mon
1-Nov Tue
2-Nov Wed
3-Nov Thu
4-Nov
Fri
5-Nov Sat
1-5: installation & cabling
(mechanical works)
6-Nov Sun
7-Nov Mon
8-Nov Tue
9-Nov Wed
10-Nov Thu
7: joint meeting
11-Nov Fri
12-Nov Sat
D
D
13-Nov Sun
8-12: early commissioning
• Trigger
• MIDAS
14-19: deep commissioning
• MIDAS tuning
• joint DAQ test with STAR
• Online analysis
14-Nov Mon
X
15-Nov Tue
X
16-Nov Wed
X
17-Nov Thu
X
18-Nov Fri
X
19-Nov Sat
X
20-Nov Sun
X
21-Nov Mon
X
22-Nov Tue
X
23-Nov Wed
X
24-Nov Thu
X
25-Nov Fri
X
X
26-Nov Sat
21-26: more for software
27-Nov Sun
28-Nov Mon
29-Nov Tue
28-2: backup & uninstall (TBD)
30-Nov Wed
1-Dec Thu
2-Dec
Fri
3-Dec Sat
4-Dec Sun
D
D
D
Installation (First week)
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Long cabling by STAR engineers
Electronics installation in to the rack (RHICf crew)
Detector installation
Short cabling around the detector, and rack
Powering step-by-step
• To work in the tunnel, we need RadWorker and Collider
User trainings, and TLD issued
• To work around the rack, we need the Collider User
Training (Zhou should take it)
nd
2
week: early commissioning
• Pedestal data taking w and w/o HV
• Offset adjustment to avoid underflow
• Noise reduction if necessary and possible
• Data taking with MIDAS
• Pedestal
• LED signal (timing adjustment)
• Work with STAR (anytime STAR experts are available)
• Signal exchange with STAR
• Modification of MIDAS (To send RHICf data to STAR/To
control RHICf data taking from STAR, Tonko is optimistic.)
• Discussion and exercize on how to handle STAR data
rd
3
week: deep commissioning
• MIDAS data taking using STAR signal
• Trigger using bunch clock
• Adjust delay to probable value (rehearsal for fine tuning)
• Quick analysis
• Tune MIDAS analyzer and event monitor
• Feeding dummy data? (preparing frontend providing
dummy data in advance)
• Slow control
• HV control/monitor/display/alert
• LV control/monitor/display/alert
• Temperature readout/monitor/display/alert
LHCf Event Monitor
LHCf Slow Control
th
4
week: continue (margin)
• Software work of hardware trouble shooting if
necessary
5th week: prepare for closing
• We must decide if we install the detector
• Shipping CAEN mainframe to Italy for repair
After January,
commissioning with collisions
• Fine tuning of the trigger timing using real collision
events
• Access to the electronics is not possible
• We must setup oscilloscope and FPGA carefully
• Fine tuning of software
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Exercise in polarimeter analysis
Event display
Slow control
Offline analysis (reconstruction of pi0, correlation with
STAR)
Other items
• Spares
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CAEN mainframe (available after LHCf p-Pb run)
Frontend PC (available after LHCf p-Pb run)
Main storage and MIDAS server
KEYTHLEY (ordered, available mid-Nov)
• Joint meeting with STAR
• 7-Nov at BNL
• Technical paper to advertise the experiment?