[Cuga] Beam Time Requests for January 2016 thru June 2017 - A message from Rolf Ent

[Lorelei Chopard]

Call for Scheduling requests To :       Spokespersons of Approved 
Jefferson Lab Experiments Cc :       Jefferson Lab Users Group From : 
Nuclear Physics Experiment Scheduling Committee Subject: Beam Time 
Requests for January 2016 thru June 2017 Link : 
http://www.jlab.org/exp_prog/experiments/scheduling.html


Commissioning of the upgraded 12 GeV Accelerator and Halls continued 
since the call for experiment scheduling requests issued a year ago. It 
has been an endeavor filled with both bitter and sweet moments. During 
the Fall 2014 run period, photons were produced in the Hall D Tagger 
Complex and delivered for the first time to the GlueX detector for 
commissioning. In December, DOE received and accepted the GlueX 
commissioning results as proof that the Key Performance Parameters (KPP) 
of the Hall D project had been met. Fall 2014 also saw the first 
multi-hall operation of the 12-GeV era with simultaneous beams delivered 
to Halls A (DVCS/GMp), B (Heavy Photon Search commissioning) and D 
(GlueX commissioning). During Spring 2015, the first RF separation at 
5-th pass was achieved using the new 750 MHz cavities. This allows to 
have one of Halls A, B or C at 5-th pass while Hall D is at 5.5 passes. 
  Unfortunately, during Spring 2015 we also experienced an electrical 
outage that affected catastrophically one of the two cryogenic systems 
required to operate the accelerator at energies of 6 GeV and above. 
Repairs of the cryogenic system required much longer time than that 
available for beam operations so, the decision was taken to give 
priority to the Hall B Heavy Photon Search (HPS) which benefited from 
lower energies (1 GeV).  The run period was also extended by two weeks 
to May 18 to compensate somewhat for the conditions on which HPS had to 
take data - in the evenings and weekends only, shutting down during the 
day for Hall B 12 GeV upgrade work.
For the upcoming periods, priority will remain on 12 GeV pre-operations 
to establish CD4B key performance parameters, and on further accelerator 
commissioning to establish robust operations for physics experiments.
Please be aware that we have implemented some changes in the procedures 
for beam time requests within the Procedures for Nuclear Physics 
Experiments process. The requirements to be met before scheduling can be 
requested are given in subsection V of 
http://www.jlab.org/user_resources/PFX/NP-PFX/text.html. In short, you 
can only request scheduling when construction of all major components of 
the experiment are (near-)completed, as at this stage the experiment 
layout and components are considered frozen, and any design 
modifications will require a change control, approved by the Division 
Management. For now, we have had experiment readiness reviews fulfilling 
this requirement only for a very few initial engineering runs and/or 
experiments. Experiment spokespersons should also note that robust and 
reliable multi-Hall beam operations are still subject to commissioning 
periods, so routine beam properties still have to be established. Please 
discuss with your Hall Leader if there are specific questions.

Under this condition, experiment collaborations requesting beam time for 
the January 2016 to June 2017 period (with the last 6 months tentative 
only) must deliver their requests to the Jefferson Lab User Liaison 
Office by close of business TUESDAY, JUNE 30. These requests will be 
reviewed by the Nuclear Physics Experiment Scheduling (NPES) committee, 
which prepares the combined accelerator and experiment schedule. See 
http://www.jlab.org/exp_prog/experiments/NPEScommittee.html for the 
composition of the NPES committee.

REQUEST INSTRUCTIONS
Beam Request Forms: There is a specific set of forms to be completed 
electronically. They can be found at 
http://www.jlab.org/exp_prog/experiments/beam_req.html

One-Page Summary: A one-page summary of your experiment is required to 
accompany your beam time request. The summary should provide a broad 
overview of the experiment and the questions it is addressing aimed at a 
general science audience rather than a nuclear physicist. This request 
is similar as was done for the 6-GeV operations era, and a list of 
one-page summaries for earlier Jefferson Lab experiments can be found 
online at http://www.jlab.org/exp_prog/experiments/summaries/.
Hall Leader Concurrence: All beam time requests and one-page summaries 
need to be approved by the Hall leader. The routing process is automatic 
but please make sure the Hall Leader is aware before hand of your 
particular requirements, specially if extensive testing and/or 
installation is involved. If you have any questions concerning this 
point, please contact the corresponding Hall Leader,
Halls A & C, Cynthia Keppel (keppel at jlab.org, 757-269-7580) Hall B, 
Volker Burkert (burkert at jlab.org, 757-269-7540) Hall D, Eugene Chudakov 
(gen at jlab.org, 757-269-6959)
Thank you for taking time to help ensure an optimal process for 
scheduling experiments at Jefferson Lab. The scheduling is of great 
importance to the Laboratory User community and the Laboratory and we 
appreciate your endeavors. If you have any questions or comments, please 
send them to users at jlab.org
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