Hall A Outlook Thia Keppel DVCS Collaboration Meeting December 2013 - - PowerPoint PPT Presentation

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Sep 12, 2022 238 likes •356 views

Hall A Outlook Thia Keppel DVCS Collaboration Meeting December 2013 Hall A Projected Experiment Schedule as of 12/2013 ~no change available on Hall A wiki Spring Fall Spring Fall Spring Fall Spring

SLIDE 1

Hall A Outlook

Thia Keppel

DVCS Collaboration Meeting December 2013

SLIDE 2

Hall A Projected Experiment Schedule as of 12/2013 ~no change

Spring ¡ Fall ¡ Spring ¡ Fall ¡ Spring ¡ Fall ¡ Spring ¡

DVCS ¡–I/ ¡ GMp ¡ DVCS ¡-‑ ¡I/ ¡ GMp ¡ DVCS ¡-‑ ¡I/ ¡ GMp ¡

3H/3He ¡

(A1

n) ¡

(A1

n) ¡

(APEX) ¡ (PREX) ¡ (CREX) ¡ PREX ¡ (APEX) ¡ (CREX) ¡ (DVCS-‑II) ¡ APEX ¡ (DVCS-‑ II) ¡ (SBS) ¡ MOLLER, ¡ SOLID…?.... ¡ 2014 ¡ 2016 ¡ 2015 ¡ SBS ¡ Experiments ¡in ¡parentheses ¡represent ¡potential ¡schedule ¡changes/

ptions ¡– ¡Prioritization ¡PAC ¡will ¡help ¡(Bob’s ¡talk)! ¡

…available on Hall A wiki

2017 ¡

SLIDE 3

U n i q u e s t a r t

p / c h e c k

t s i t u a t i

!

http://www.jlab.org/div_dept/physics_division/experiments/scheduling.html

SLIDE 4

✓ ✓ ✓ ✓(Hall A Operations Manual and OSPs for “new” equipment) ✓ ✓

Very Near Future:

5. Submit HIERD (Hazard Identification and Emergency Response

Document) – under development (Physics, ESH&Q, Facilities – SAF110 Safety Walk-Thru!!)

6. Submit experimental procedures.. ✓

December 9!

SLIDE 5

Conclusions

On track for a successful ARR Phase 2 review at the

end of January

No show stoppers!

Slide directly from Experimental Readiness Review Close-out – things to do, but overall good news! More to come, though… Accelerator Readiness Review (DOE, external) in January

SLIDE 6

Hall A Base Equipment Checkout Conditions for Spring Run

Run anticipated late March 2014 for 1-4 weeks
12 GeV milestone 3 pass > 2 GeV pulsed beam delivery (see Jay’s talk!)
planning for some checkout run time at higher (CW) current
beam ~40% at 6.6 GeV, ~60% around 5.4 GeV to avoid trips
accelerator performance and operations budget dependent
Beam dump upgrade planned for Summer 2014 limits activation
agreed on 5 µAmp limit (other than maybe one short test for cryotarget)

and thin targets, 1%, 2% Carbon, 15 cm hydrogen

SLIDE 7

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Hall Base Equipment Checkout Activities for Spring Run

Some activities can happen in parallel
Highly dependent on beam conditions
See Luke’s talk!

SLIDE 8

Beamline

– Compton Polarimeter: under vacuum, still need to install detector, work on optics: will try to thread beam through, maybe get some test data – Moller Polarimeter: room temp ready to go, test in Spring run, superconducting upgrade in works – BCMs, BPMs, Unser, preparations for Spring (see Sasha’s talk) – Raster: additional coil in, new electronics to be installed – Arc Energy: need to install new NMR in 9th dipole, measurement planned planned for Spring run

Cryotarget

– + Swing Arm for Spectrometer Optics – Scattering Chamber + Extension

Detectors

– HRS repairs and upgrades » Shower, Cerenkov, additional tracking plane » DAQ and cosmic testing – DVCS Calorimeter Shielding + Stand, cable mobility

HRS Cooldown to start January 2, 2014!

Current Activities in Hall (preparations for DVCS/GM

p)

NOT a comprehensive list LOTS of room for help!! DVCS collaboration meeting at ODU Thursday, Friday

SLIDE 9

3H target design and venting in preparation for 2015/2016 experiments
BigBite
Assembly in test lab started
New/modified Cerenkov(s)
PREX
Pb targets purchased
Shielding design
Polarimetry
New septum magnet designed for APEX
Internal E&D review, to be purchased by collaboration
Polarized 3He target improvements and continued development
Convection, new lasers, metal windows, double cell…
MOLLER Experiment internal experiment design and costing update in preparation for

possible DOE science review early 2014

All but beamline complete
SoLID Experiment just submitted draft CDR to Physics Division as first step for early 2014

Director’s Review

Working with Cornell to move solenoid in 2016
Hall A E&D coordinating to make a planning trip

….and beyond…

also NOT a comprehensive list

SLIDE 10

SBS

Project started October 2013
First Annual Review November 4,5,

2013 – Some recommendations, but overall positive and on track

Spectrometer work at Jlab

– Power Supply ordered – 48D48 magnet shipped from BNL – Working on support, stand and motion

GEM order placed to UVA

– Pre-R&D complete

Coordinate detector – new!
HCAL Hadron calorimeter

– Scintillator ordered from FNAL

DAQ/tracking/electronics….

– Test lab

SLIDE 11

Summary

Hall A will have first beam time starting in 3-4 months!

– Successful experimental readiness review

Many experiments, many parallel efforts
There is a lot of activity and a lot of work to do - the

collaboration is encouraged to take on projects, send students, send postdocs,….

Exciting times – 12 GeV beam is on the way!