sPHENIX is a new detector at RHIC.

[Stefan Bathe <bathe AT bnl.gov>]

Dear All,

I don’t think these were sent to the list yet.  So here goes the minutes of last Friday’s general meeting.

Regards,

Stefan

-- 

---------------------------------------------------------------------------------
Stefan Bathe

Professor of Physics
Baruch College, CUNY

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
----------------------------------------------------------------------------------

Begin forwarded message:

From: Stefan Bathe <bathe AT bnl.gov>

Subject: minutes of today's sPHENIX general meeting

Date: April 6, 2018 at 1:44:56 PM EDT

To: David Morrison <morrison AT bnl.gov>, Gunther M Roland <rolandg AT mit.edu

Dear Dave and Gunther,

Here are my notes from today’s general meeting.  I don’t know if you would like to edit them first, or if I should send them to the list.

Regards,

Stefan

—

sPHENIX general meeting, 2018-04-0

=========================
(minutes compiled by Stefan)

attendance:  peaked at 40

collaboration news--Gunther (see slides)
------------------------
lots of positive developments:

meeting with ALD:  budget
- congress passed budget for FY18
- 10 % increase for nuclear physics
- expectations for FY19 also positive

What does that mean for sPHENIX?
- meeting with ALD on MVTX (3/27)
- ALD discussed bringing MVTX back after OPA review
- funding largely through RHIC operations (as MIE)
- time constraints
  - ALICE version 1.5 years before ours
  - would be beneficial to be part of that production
- next step:  ALD will seak verbal agreement from DOE to commit $1M for
Readout Unit (RU) and stave production

Timely MVTX workfest at MIT April 30 - May 1
- still space available for more participants

Discussion
- Jamie:  any discussion on bringing back inner HCal
- Gunther:  not discussed, will need to pursue in the future
  - after meeting in China on EMCal (hoping this meeting will solve EMCal)
  - MVTX was highest priority to bring back   
- Gunther:  no impact on OPA review

ALD discussions continuted:  LOI
- charge for updating sPHENIX and EIC LOI
- ALD agreed with charge that had been agreed upon with cold QCD group
- leadership combination of sPHENIX and outsiders interested in EIC
- presentation at PAC meeting
- 9/30 deadline

Collaborative Tools
- Tom Throwe now heading new RACF group with title "Services and Tools"
- hope that collaborative tools will be brought up to speed
- asking for input from collboration

Software and computing review
- June 18
- chaired by Torre Wenaus
- challenging since committee used to LHC standards
- requires combined effort from computing, tracking, and project experts
- run plan needs to be factored in
- uncertainty of factor ~ 5 in computing needs to be sorted out before review
- Martin points out that there are multiple conflicts
- Gunther advises to prioritize (date set)

Upcoming conferences
- Itaru:  DIS
- John L.:  ISMD
- Yongsun doubly subscribed:  QM
   - need EMCal poster presenter
- RBRC workshop on definition of jets 5/25-27
  - need representation
- RHIC users meeting
  - need sPHENIX plenary talk presenter
  - nice occation to convey reality of sPHENIX to broader community

project news--Ed (no slides)
--------------
- didn't have chance to prepare slides
- prepared agenda for OPA review
  -will send to DOE today
  - skipping infrastructure (as opposed to director's review)
- order outer HCal steel ($5.5M)
  - satisfied committee
  - triggered rapid progress on assembly
  - waiting for vendor; expect ~ 5 % increase in cost
  - then will finalize with BNL
  - will place order next week
- had frozen ability to order < $100k orders
  - now budget:  UIUC can go ahead to produce EMCal blocks
  - by Monday this can go ahead
- $300k fiber order moving ahead
- working through recommendations from director's review
- dress rehearsal for OPA review May 8, 9
  - intro talks due May 2
- rather large list of R&D tasks to be completed in next 12-18 months
  - now with budget this should proceed on schedule
- summary: on track for
- discussion
  - Dave:  have committee for OPA review?  Yes.
  - Gunther:  designated person for physics case?
     - Patty McBride (head of physics division at FNAL)
     - Ed will send list of committee members to Gunther
  - Dave:  unified report?  Yes.
  - Christine:  timeline?
     - September
     - not critical; have money for R&D through next 18 months
     - only CD3-A critical; will need to wait for FY19 budget
        - expect FY19 CR
   - Gunther:  interal rehearsals before rehearsal?
      - Ed:  in particular message of Ed's and Gunther's talks should be coordinated (feedback from director's review)

test beam--John H. (shared slides, not on agenda)
----------------
- were able to achieve fraction of goals
  - EMCal position scan
  - some of energy scan
  - significant amount of HCal-only running and tile mapper scans
- some problems with EMCal
  - slowed us down
  - traced down to normal (low) gain amplifier
     - Steve Boose implemented fix (but also problem with cross talk and slewing)
     - was somewhat marginal and temperature dependent
- need to complete beam test btw. June 13-July 4; final date not set yet
  - may involve shipping EMCal back for a few days in May
- Dave:  size of crew needed for continuation of test beam?
 - John:  good opportunity for students (summer break)

Christine N.:  register by 5/15 for jet workshop
--------------------------------------

Jet performance plots for OPA review--Dennis (see slide)
-------------------------------------
- presented suggested performance plots at last meeting 
- progress, but no draft plots for this meeting
- expect regular updates in simulations meetings
- expect draft plots by next GM
- simulations include all EMCal towers; handle eta<0.85 boundary with offline fiducial cut
- similar for HCal:  iHCal present in simulations, but won't be read out for analysis
  - but can be to answer questions regarding restored scope
- simulations team coordinates centralized production of AuAu backgrounds
- then individual analyzers can embed signal
- additional volunteers welcome
- discussion:
  - Ron S.:  organizational question:  status of jet topical WG
     - Dennis:  group not being disbanded, but at the moment subsumed into simulations meeting
     - Ron:  suggestion:  move email thread to topical group rather than simulations group
        - Gunther agrees
  - Gunther:  ask Aaron for input on plan
  - John H.:  need set of plots by April 27; otherwise too late for CDR
     - Dennis:  matches proposed time line to have draft plots by April 20   

Cold QCD update and path towards sPHENIX@EIC LOI--Christine A. (see slides)
------------------------------------------------------
- main activity for past months of Cold QCD topical group was on updating LOI
- have finalized charge as of yesterday
  - important point:  external participation
  - makes it easier for external people to committ
- important differences since last LOI 2014
  - detector and collaboration much better defined
  - Geant4 infrastructure developed for at various levels for beyond-baseline detectors
- strategy to demonstrate physics capabilities
  - Geant simulations
  - event generator studies
- meetings Monday nights at 8:30
- lot of activities; but a lot remains to be done
- organize manpower around focus groups
  - generator-level studies of ep and eA collisions
  - Geant4 EMCal
  - Geant4 hadron PID
  - Geant4 tracking, displaced vertices, jets
- on Monday Jin gave talk on reusing sPHENIX DAQ for EIC detector
  - designed for AuAu
  - data volume smaller at EIC even if event rate higher
- need close interaction with sPHENIX groups:  tracking, jet structure, HF, quarkonium, simulations
- more volunteers welcome (get in touch with Christine and Nils)
- asked Berndt to change structure from task force to detector study group
  - such that group can naturally evolve in the future
discussion:
- Nils:  need to find someone who works on figuring out where to put detectors in realistic engineering implementation (as opposed to just Geant implementation)
  - Chris:  central part Geant implementation is very close to engineering
     - Geant volumes include air space for cables
     - Jin:  cables eta >1.1 (outside of enclosure box) not implemented
     - Stefan:  proposal to implement enclosure boxes for forward/backward detectors
        in sPHENIX engineering (and Geant) to flag future space conflicts
- Chris:  official sPHENIX accounts now available
  - but any rcf account will do
  - Dave:  should coordinate with the Collaboration Tools group

General discussion--Dave
---------------------
- none

-- 
---------------------------------------------------------------------------------
Stefan Bathe
Professor of Physics
Baruch College, CUNY

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
----------------------------------------------------------------------------------

On Apr 6, 2018, at 11:06 AM, David Morrison <morrison AT bnl.gov> wrote:

Dear collaborators,

Just a quick reminder that the fortnightly sPHENIX general meeting will take place today, Friday, April 4, at noon ET.  At BNL, the meeting will be held in Rm. 2-219.  For everyone calling in, the bluejeans info and a link to the agenda page are below.  Looking forward to the discussion!

Regards,
Dave and Gunther

https://indico.bnl.gov/event/4494/

To join the Meeting: https://bluejeans.com/913283451 To join via Browser: https://bluejeans.com/913283451/browser To join with Lync: https://bluejeans.com/913283451/lync To join via Cisco Jabber Video: https://bluejeans.com/913283451/jabber To join via Room System: Video Conferencing System: bjn.vc -or-199.48.152.152 Meeting ID : 913283451 To join via phone : 1) Dial: +1.408.740.7256 +1.888.240.2560 +1.408.317.9253 (see all numbers - http://bluejeans.com/numbers?ll=en) 2) Enter Conference ID : 913283451

-- 
David Morrison  Brookhaven National Laboratory  phone: 631-344-5840
                Physics Department, Bldg 510 C    fax: 631-344-3253
                          Upton, NY 11973-5000  email: dave AT bnl.gov

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