1. HPS: proposed run plan, cost and schedule Meetign at DOE, February 7 2013

2. HPS experiment Search for heavy photon(s) in mass range 20 MeV to 1000 MeV Three beam energy settings 1.1 GeV, 2.2 GeV, and 6.6 GeV Will cover  ’/  > 10 -7 using “bump hunt” Will reach to  ’/  ~ 10 -10 region with displaced decay vertex search (unique to HPS) Will search for heavy photons in an alternative to the e + e - decay mode,  +  - (unique to HPS) Will discover “true muonium”, a bound state of a (  +  - ) The JLAB PAC39 graded HPS physics with an "A", approved a commissioning run with electrons (was also approved by PAC37), and granted so-called C1 approval for the full HPS experiment. The requested run time for the commissioning is 2 weeks. The total requested beam time for the experiment is 180 days. Meetign at DOE, February 7 2013

3. HPS run plan The first phase may include: – a commissioning run as early as possible with first beams to Hall-B for 6 weeks, which includes data taking at 1.1 GeV and 2.2 GeV beam energies – extensive data taking after month or so from the commissioning run if possible, at 2.2 GeV and 6.6 GeV (roughly 3 weeks each) – Can run more if beam time is available The second phase will use remaining beam time in 2016 and beyond Will be able to discover and study the properties of true muonium purple-dashed: 2 week of 50nA, 1.1 GeV beam on a 0.125% target, blue-dashed: 2 week of 200nA, 2.2 GeV beam on a 0.125% target blue-solid: 3 weeks of 200nA, 2.2 GeV beam on a 0.125% target, dark-green: 2 weeks of 450nA, 6.6 GeV beam on a 0.25% target, detecting A ’  e + e -, light-green: 2 weeks of 450nA, 6.6 GeV beam on a 0.25% target, detecting A ’   +  -, red: the statistical combination of all of the above green-shaded: 3 months each of 2.2 GeV and 6.6 GeV (same currents and thicknesses as above) Anticipating a possible early running in Hall-B, HPS plans to execute the full experiment in two phases - Meetign at DOE, February 7 2013

4. HPS apparatus HPS plans to build somewhat scaled down version of the detector proposed in the original proposal to PAC-37 Pros: ensures timely completion of the detector construction (fall of 2014) and reuses many components of the test setup, beamline and magnets, has almost no impact on the CLAS12 installation Cons: Overall efficiency will be lower by ~50% Proposed setup will be located in upstream end of the Hall-B (as May 2012 test setup) Setup will be based on 3-magnet chicane Detector package will include: – six layers of double plane Si-tracker – PbWO 4 crystal calorimeter – muon detector Meetign at DOE, February 7 2013

5. HPS detector in Hall-B HPS Location of the CLAS12 Torus Meetign at DOE, February 7 2013

6. Layout of the proposed detector 3-magnet chicane was used at the same location for TPE experiment (distance between magnets will be bigger by 50 cm to accommodate the muon detector) 5-layer SVT in the vacuum and ECal downstream of the vacuum chamber were used during the May 2012 test run Meetign at DOE, February 7 2013

7. HPS WBS Full WBS and schedule was generated with 12 components JLAB part includes (WBS #): 1.beamline - vacuum beamline starting from first chicane magnet to the electron beam dump, beam profile monitor, beam offset monitor, shielding, photon beam dump 4.electromagnetic calorimeter (ECal) - test run calorimeter with fixes and improvments to mother board and amplifiers 5.muon system - scintillator hodoscopes, iron absorbers, vacuum chamber and stand 6.trigger and DAQ (TDAQ) - new firmware for FADC, CTP, and SSP, online monitoring systems, full DAQ 7.slow control - beam monitoring, HV/LV controls, target and SVT motion controls, temperature and pressure control and monitoring Schedule assumes start of the constriction in July 2013 and ends September 2014 Meetign at DOE, February 7 2013

8. HPS budget requested from HEP WBSNameLaborL ContMaterialM contLabor TotMaterial TotTotal 1HPS$1,413,974$402,180$930,435$288,434$1,816,154$1,218,869$3,035,023 1.1Beamline$100,350$30,105$148,550$44,565$130,455$193,115$323,570 1.2SVT$362,819$112,616$123,761$39,613$475,435$163,374$638,809 1.3SVT DAQ$326,869$86,720$142,184$50,811$413,590$192,996$606,585 1.4 ECAL$32,296$9,689$207,540$62,262$41,985$269,802$311,787 1.5Muon$74,075$25,401$244,330$75,165$99,476$319,495$418,971 1.6TDAQ$140,976$43,233$0 $184,209$0$184,209 1.7Slow Control$112,781$28,195$64,070$16,018$140,976$80,088$221,064 1.8Installation & Commissioning$58,798$17,639$0 $76,437$0$76,437 1.9Electron Running$0 1.10SLAC Travel Meetings$63,572$9,058$0 $72,629$0$72,629 1.11SLAC Travel for Set up and Running$78,489$20,640$0 $99,129$0$99,129 1.12Project management$62,949$18,885$0 $81,833$0$81,833 LaborM&STravelsTotal SLAC $1,047,077 $373,218 $171,758 $1,592,052 JLAB $597,320 $845,652 $- $1,442,971 Sub-Total $1,644,396 $1,218,869 $- $3,035,023 JLAB M&SFY13FY14Total Direct Cost $121,510 $446,042 $567,551 Indirect $59,540 $218,560 $278,100 Total $181,050 $664,602 $845,652 JLABFY13FY14TOTAL ME $7,047 $32,212 $39,260 MD $15,984 $44,540 $60,524 MT $- $28,886 EE $22,098 $236,363 $258,461 ET $2,751 $11,004 $13,755 $47,880 $353,006 $400,886 Total Direct $400,886 Total Indirect $196,434 Total $597,320 Full WBS is available (was sent to DOE HEP together with FWPs) Budget includes Lab overheads and contingencies (15% for catalog items, 20% items similar to previous design, and 30% for new items) Meetign at DOE, February 7 2013

9. Assumptions for the budget JLAB, NP support: Electron beam line upstream of the first chicane dipole and most part of the downstream beamline Beam line devices; beam current/position monitors, hallo counters and wire harps Chicane magnets and power supplies, magnet stands Analyzing magnet vacuum chamber Front end electronics for Ecal and the muon system, trigger modules, and DAQ – Total of 44 FADC250, 3 VXS crates, 3 CTPs, 3 TI boards, 2 SSPs HV power supplies for Ecal (old IC) and the muon system (12 modules and a mainframe from PCAL) Scintillators and fibers for muon hodoscopes (leftovers from PCAL) Lab space on site for detector assembly (clean room for 2 weeks for SVT) Modest mechanical engineer, designer, and technician help for beam line, Ecal, muon system, and for installation Data storage and CPUs for data processing, disk space for analysis Meetign at DOE, February 7 2013

10. Other funding possibilities Funding from European sources for ECal upgrades, applicant - IPN ORSAY (M, Guidal, R. Dupre) European ERC Advanced Grant 2013 grant - 1.5 MEuros, results of the first step mid-April 2013. If selected, then there will be an interview in Brussels, the final result mid-July 2013 “Region/Sesame" grant - 500 kEuros, expect the final decision in mid-June. If successful will cover ECal expenses in WBS and will allow replacement of old 5x5 mm 2 APDs with a new large area APDs, 10x10 mm 2 (as in CLAS12 FT) ANR application - 250 kEUros, the final decision in mid-June If successful will cover ECal expenses in WBS P2IO - 70 kEuros, expect the final decision in mid April. NSF MRI for the muon system - ~$250K, applicants W&M (K. Griffioen, PI), Rutgers (Y. Gerstein), ODU (L. Weinstein) Meetign at DOE, February 7 2013

11. HPS schedule Meetign at DOE, February 7 2013

12. HPS schedule (cont.) Meetign at DOE, February 7 2013

13. HPS schedule (cont.) Meetign at DOE, February 7 2013

14. Beam line Collimator for SVT protection Beam pipes and bellows from upstream of the first chicane dipole to Vacuum chambers: – SVT vacuum chamber exists – Ecal vacuum chamber exists, need flings to connect to muon vacuum chamber – Muon vacuum chamber is new – Vacuum chamber through the third magnet exist, ned some rework (to fit with muon system) Shielding and photon beam dump Beamline to FC Beam profile monitor at FC Meetign at DOE, February 7 2013

15. Electromagnetic Calorimeter The test run electromagnetic calorimeter (ECal), 442 lead-tungstate (PbWO 4 ) crystals with avalanche photodiode (APD) readout will be used Meetign at DOE, February 7 2013

16. Fixes and modification to ECal Replacing the ECal mounting system with a more robust and finely adjustable (both horizontally and vertically) support mechanism to align the ECal correctly with the ECal vacuum chamber. There was no need for such system during May 2012 run Modifications to the side brackets to accommodate fiber bundles if Light Monitoring system will be funded Modification of motherboards, must be done for bottom module, but replacing motherboards on both will resolve issues of a higher level of noise Removing signal splitters, FADCs will be used for energy and time measurements, for trigger and as real time scalers. Firmware update will be needed. Signals at FADC input will be lager by x3 Replace existing amplifiers with new low gain, low noise amplifiers (developed for CLAS12 FT) Light monitoring system, if funding will be available Replace existing low voltage power supply with remotely controlled one with independent outputs for each motherboard Meetign at DOE, February 7 2013

17. Muon system Consists of two parts, beam-up and beam-down as Ecal, with a [simpler] vacuum chamber in between. Each part consists of 4 layers of double plane (XY) Sc- hodoscopes, sandwiched with iron absorbers Light collection and readout system is the same as in CLAS12 PCAL All the components, with exception of layer support frame, have been used in PCAL. Scintillators and fibers are from PCAL leftovers Meetign at DOE, February 7 2013

18. Trigger and DAQ (JLAB) New Crate Trigger Processor will be designed for 12 GeV detectors, need a new firmware for HPS cluster finding New firmware for FADC to accommodate TDC and scaler functions, and measure and subtract baseline event-by-event bases More complete event headers, include information from slow control to data stream New firmware for SSP to include muon system and additional trigger options Trigger monitoring tools Overall integration of two DAQ systems Meetign at DOE, February 7 2013

19. Slow controls Control and monitoring of beamline elements Control and monitoring of the target and SVT motors Control and monitoring of HV and LV systems Control and monitoring of temperature, pressure, and flow meters Control of the SVT chiller Control and monitoring of magnet current Archiving of all monitored devices Meetign at DOE, February 7 2013