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NeXus Code Camp - January 2020

The 2020 NeXus Code Camp is scheduled for 3 days in January 2020: Jan 21 (Tuesday) - 23 (Thursday). The code camp will take place at the Advanced Photon Source, Argonne National Laboratory, IL, USA (near Chicago).

(We used an online poll to help decide the exact dates.)


NeXus periodically convenes a Code Camp to develop NeXus software components through intense effort by small groups working on specific projects and tasks. It is expected that those attending the 2020 NeXus Code Camp will already have a strong foundation and understanding in aspects of the NeXus software and come ready with knowledge, tools, and ideas to make significant progress during the event. The specific projects and tasks are described on the GitHub issue tracker and will be revised as the event draws near. Issues from the full list may be (re)assigned to this milestone.

(For more info on code camps, try searching Google for “code camp” or “codeathon”. Events such as the EPICS Codeathon would be reasonable templates for this NeXus code camp.)


The list of Attendees is here.


You must notify the host of your visit in advance to arrange site access. Also, see the section below titled ANL Visitor Registration.


  • Conference fee: no fee
    • food at morning and afternoon breaks will be provided
    • perhaps (no guarantee) a small meeting souvenir
  • regular meals (breakfast, lunch, dinner) will be traveler's expense

ANL Visitor Registration

The Argonne visitor registration form is for individuals who are visiting employees.

Argonne visitor registration form:

Indicate that you are visiting Pete Jemian.


  • Pete Jemian
    • X-ray Science Division
    • Advanced Photon Source, Argonne National Laboratory
    • 9700 South Cass Avenue
    • Argonne, IL 60439 USA
    • email:
    • office phone: +1-630-252-3189 (forwards to mobile)
    • Google voice: +1-847-859-9775 (forwards to mobile)

Meeting Place

Building 437 (LOM 437 on the sign), Conference Room C010 (Advanced Photon Source)

map: google

Recommended Lodging

Please reserve your own rooms directly with the hotel:

Argonne Guest House
Argonne National Laboratory
9700 S. Cass Avenue - Building 460
Argonne, IL 60439
Web site:
telephone: +1-800-632-8990, +1-630-739-6000
fax: +1-630-739-1000
map: google
General information: Visiting the APS


  • airport:

    • Chicago O'Hare (ORD): international
    • Chicago Midway (MDW): domestic
    • Milwaukee, WI Mitchell Field (MKE): distant alternative
  • taxi:

    • Call for a taxi pickup only after you have all your bags
    • Must be a taxi that goes to Chicago suburbs
    • suburban taxi will pickup in second lane of arrivals at Chicago O'Hare airport
    •, 1-800-244-1177 (automated system)
    • ... others ...
  • airport bus:

  • commuter train:

    • inconvenient

Practical Matters


item quantity who provides?
projector & screen   host
LCD displays, keyboards, & mice   host
120 VAC, 60 Hz, US-style 3-prong extension cords sufficient host
foreign electrical power adapter as needed traveler
Wi-Fi connections sufficient hotel


  • No meals are provided by the code camp.
  • Light refreshments will be available for the breaks.
  • Attendees of the will decide ad hoc on where to have their meals.


Business Matters

Since this is not to be a meeting of the full NIAC, no business matters can be resolved.


Resolve issues to prepare next release of NXDL.


  • We should take this opportunity to provide the standard Introduction to NeXus as a public presentation.
  • We should allow time for an open, working lunch on one of the days to interact with the community able to attend.
  • If someone wishes to make any other public presentation, either during, before, or after the Code Camp, please contact the host.


  • arrive evening before the Code Camp
  • conference check-in Day 1 morning
  • meet Day 1
  • meet Day 2
  • meet Day 3
  • checkout next day morning

Here is the daily schedule:

time description comments
9:00 - 10:15 AM meeting work on projects and tasks
10:15 - 10:45 AM morning break (included)
10:45 AM - 12:00 PM meeting work on projects and tasks
12:00 - 1:15 PM lunch offsite, traveler's expense
1:15 - 3:15 PM meeting work on projects and tasks
3:15 - 3:30 PM afternoon break (included)
3:30 - 5:00 PM meeting work on projects and tasks
5:00 - 6:00 PM meeting daily summary (plenary)


  1. late-afternoon wrap-up (plenary) each day
  2. morning and afternoon breaks will be included in amenities charge
  3. breakfast, lunch, dinner will be in a local restaurant at traveler's expense

Day 1

  • Check-in, Welcome, and introductions
  • Decide which GitHub issues to work on and resolve during this code camp.
  • AOB?


Day 2


Day 3


Minutes for the meeting

Day 1 morning

Day 1 afternoon

Day 2 morning

Day 2 afternoon

Day 3 morning

Day 3 afternoon

page source: GitHub link

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