HRMT "RodTarg“ Technical Board – Feb. 2 nd 2015 Claudio Torregrosa Martin, Marco Calviani, Antonio Perillo-Marcone, Mark Butcher (EN/STI), Luca Gentini (EN/MME) EDMS Number:

Introduction and Goals of HRMT27-RodTarg February 2nd 2015 HiRadMat27 TB - Proposal Impact of proton pulses onto thin rods -8 mm diam 140 mm length- of high density materials 1.Cross-check and validation of the numerical hydro-codes employed  By a ramped increase of intensity  Record enough amount of information to validate the codes 2.Assess and reduce uncertainties of the target material response under similar conditions as reached in the AD-Target  In terms of: Temperature and pressure wave  Bring the material to its structural limits (still in solid state)  Identify and quantify failure mechanisms  Assess material candidate selection by studying their performance

Experiment lay-out February 2nd 2015 HiRadMat27 TB - Proposal Motor of the sample holder mobile system V-shape Graphite clamp Strings High-Z target rod 12 Target Rods inside a Primary Vacuum stainless steel tank BPKG or other beam imaging system Mobile sample holder with 12 target rods + 1 empty position. 420 mm 620 mm BEAM

Experiment Modular Assembly February 2nd 2015 HiRadMat27 TB - Proposal (iii) Tank and attached BPKG support (outside the tank) (ii) Experiment support table (x, y) + small rotation degrees of freedom (i) HRMT Table 3-Main Part Assembly 1.Standard HRMT table 2.Experiment support table (X-Y movement) 3.Vacuum tank and BPKG support (all joint together) Vacuum Pump connected with HEPA H14 filter in the Inlet Vacuum Pump connected to tank through HEPA H14 Filter Possible external tank water cooling system using standard HRMT-table magnets water connection

List of Materials February 2nd 2015 HiRadMat27 TB - Proposal Irradiated target Rods MaterialTotal mass [kg] Iridium0.48 Tungsten0.54 W-26Re0.136 W-Lanthanum0.136 Molybdenum0.1 Tantalum0.117 TZM-Alloy0.1 Total Mass1.61 kg Sample Holder MaterialTotal mass [kg] Aluminium AL5083 H kg Graphite0.139 St. Steel 0.6 Total Mass5.34 kg Tank MaterialTotal mass [kg] Stainless steel56.1 Aluminium AL Carbon Fibre0.68 Total Mass58.2 kg Experimental support table MaterialTotal mass[kg] Stainless steel Aluminium AL Total Mass154 kg Sample holder: Aluminum Tank and Experimental support table: Stainless steel No melting or vaporization of any of the target materials is expected

List of Instrumentation & Equipment October 14-15th 2014 HiRadMat SB - Proposal 1409 update6 Online Instrumentation at HRTM table Position 3x Passive interferometer heads Inside tank 2-5 cm from targets Passive Pyrometer headInside Vacuum tank 15 cm from targets 40 xThermocouplesInside tank, attached to target rods, tank walls and interferometer head Radiation hard cameraOutside the tank Vacuum GaugeOutside the tank, at the pump inlet Equipment at HRTM tablePosition Motors2x in the experiment support table 1x above the tank upper plate LVDT (Linear position sensor)Outside the tank Camera lightingOutside the tank Vacuum PumpOutside the tank HEPA FilterOutside the tank RadMon detectorsOutside the tank Beam Position Monitor BPKGOutside the tank, upstream Remote InstrumentationPosition LDV In the TT61 bunker. Pointing to target surface through TT61-TNC feedthroughs Remote EquipmentPosition Interferometer acquisition systemIn TT61 bunker. Connected to interferometer heads through TTC-TNC feed-throughs Pyrometer acquisition system In TT61 bunker. Connected to pyrometer head through TTC-TNC feed-throughs Thermocouple acquisition systemIn TT61 bunker. Connected to thermocouples through TTC-TNC feed-throughs Vacuum gauge acquisition systemIn TT61 bunker. Connected to vacuum gauge Camera acquisition systemIn TNC(TJ7) bunker. Connected to radhard camera RadMon Acquisiton SystemIn TNC(TJ7) bunker. Connected to RadMons. Motor control systemIn BA7 control room Camera lighting control systemIn BA7 control room Vacuum Pump control systemIn BA7 control room Main part of the instrumentation and equipment connected through the standard HRMT table Additional cabling not present in HRMT table: Via the TT61-TNC feed-throughs: 4 optic fibers 100 NE copper wires To the TNC(TJ7) bunker: 1 x camera cable 1 x WorldFIP cable for RadMons

Installation Phase October 14-15th 2014 HiRadMat SB - Proposal 1409 update7 1)Experiment Integration and Assembly  Manufacture of tank, sample holder and tables by EN/MME  All parts assembled and instrumented and tested in EN/STI bldg. 867  BPKG support, tank and in-tank instrumentation alignment in Metrology Lab 2) Integration in SPS-BA7 – estimated time ~ 1 week  Integration of the experimental tank interface plate on to the HRMT lifting table, first alignment of the experimental tank on the interface plate;  Alignment cross-check of the interferometers and pyrometer head(s);  Integration of the electrical connectivity;  First testing of the acquisition system and of the remote control system of the online systems;  Connection and installation of the rad-hard cameras to the test stand; 3) Installation in TNC estimated time ~ 3 days  Transported to the TNC HiRadMat area via a trolley transport system, vertical lift and then remotely controlled crane.  Installation of the LDV system with mirror alignment;  Connection of the instrumentation feed-throughs via the TNC/TT61 penetration, including the connection of the optical fiber system of the interferometer  Alignment cross-check of the experimental set-up

October 14-15th 2014 HiRadMat SB - Proposal 1409 update8 Beam Pulse List Intensity Beam spot [mm] Bunch spacing [ns] Pulse length [us] # bunchesp/bunchTotal Sigmax &y 1(36x)363.00E E (36x)366.95E E (36x)361.39E E (36x)362.08E E (36x)362.78E E (36x)364.17E E Each rod irradiated 3 times for 6 different intensities 18 impacts per rod 216 shots in the whole experiment (excluding pilot pulses) 1.48*10 14 POT Online monitoring of Temperature, Vacuum as well as Radiation Hard Camera will alert of any abnormal situation Operation Phase (1/2) *Detailed pulse list at EDMS

Operational Phase (2/2) October 14-15th 2014 HiRadMat SB - Proposal 1409 update9 Temperature drops to 100 °C before each pulse hits Max temperature reached 2200 ° C Target-beam sequence selected in order to avoid overheating of the targets. 18 minutes min. period cycle seen by each rod. Online monitoring of targets temperature in order to prevent unexpected overheating Estimated time for operational Phase: 3 days Maximum Temperature seen by the most unfavorable rod:

Cool-Down Storage and Maintenance February 2nd 2015 HiRadMat27 TB - Proposal After the experiment, vacuum pump remotely switched off, and a valve placed at the pump inlet remotely closed. 2.The experimental set-up will need to remain at the experimental area for ~ 1 week for radiation cool-down. Then, fast disconnection of services not included in standard HRMT table (200 μSv/h outside the tank) 3.Remote transport with the crane to the cool-down storage area downstream in TNC tunnel. 4.6 months of cooling at the storage area downstream in TNC tunnel, radiation dose rate drops to levels below 100μSv/h at contact with the tank wall.

Post Irradiation and Disposal (1/2) HiRadMat27 TB - Proposal Transport to BA7 Surface (6 months after irradiation) 2.Easy disassemble at BA7 Surface (<100 μSv/h at wall contact) Tank BPKG support Experimental table 3.Transport of the closed tank to 867-R-P58 4.Transport of Experimental table and BPKG support February 2nd 2015

Post Irradiation and Disposal (1/2) October 14-15th (2) Opening of the tank at 867-R-P58 Controlled area, sealed at under pressure No release even in the worst case scenario of target fragmentation Easy-extraction of sample holder and insertion in a drum prepared for direct coupling with ISOLDE hot cell Remote disassembling and Ultra Sound inspection of targets at ISOLDE hot cell HiRadMat27 TB - Proposal 1409

Risk Analysis (1/2) 13 Risk Analysis during Operation # ItemDescriptionHazardPrecautions Likelihood Severity Risk 1 Overheating of target samples Overheat of target due to successive proton beam impacts Melting or vaporization of the targets Detailed thermal calculations for all the beam impacts 248 On-line and redundant monitoring of temperature in all the rods Target rods coated with high emissivity material in order to increase radiation HT >18 minutes period between two consecutive pulses in the same target Ramped increase of intensity in order to detect unexpected overheating 2 Release of radioactive material Leakage of radioactive material outside the tank due to fragmentation/vaporizati on of targets and containment failure Radioactive contamination of the area Monitoring of targets temperature to avoid vaporization 148 Vacuum in the Tank HEPA H14 (or greater class) filter upstream the vacuum 3 Beam misalignment Large beam misalignment producing impact of the proton beam with the tank walls or internal structures Damage of tank and internal structures Alignment done using precise beam monitoring system 236 Relatively low intensity pulses Low density material –Aluminium and graphite- employed for internal structures *Detailed Risk analysis included in the safety document EDMS no: February 2nd 2015 HiRadMat27 TB - Proposal 1409

Risk Analysis (2/2) 14 Risk Analysis during Disposal and PIE # ItemDescriptionHazardPrecautions Likelihood Severity Risk 1 Radiation exposure during disconnection of cables After the experiment some cables will need to be disconnected manually from HRTM table Exposure to ionizing radiation Connection box placed far from the tank 22 6 RadMon monitoring systems Connection box designed to minimize time 2 Radiation exposure or radioactive leakage during opening of tank Radiation exposure or radioactive leakage during opening of tank at (867-R-P58) Exposure to Ionizing radiation Ingestion of fragment of targets R-P58 equipped with under- pressure system 24 8 Wearing appropriate PPE Easy-and-fast dismounting design Remote handling if necessary 3 Radiation exposure during PIE Radiation exposure during the PIE of irradiated targets Exposure to Ionizing radiation PIE carried out remotely at ISOLDE hot cell 144 *Detailed Risk analysis included in the safety document EDMS no: February 2nd 2015 HiRadMat27 TB - Proposal 1409

Conclusions 15 1.HRMT27 will investigate the response of high-Z target materials to beam impact similar to what we have in AD- target. 2.The design of the experimental tank is well progressing. 3.Safety aspects in all the experiment phases have been a major priority since the very beginning of the design. 4.6 months cool down period will be sufficient for residual dose rate to fall down <100 uSv/h in contact with the tank. 5.Detailed disposal and PIE procedures are already planned. February 2nd 2015 HiRadMat27 TB - Proposal 1409

Thanks for your attention

February 2nd Back-up Slides HiRadMat27 TB - Proposal 1409

Residual dose rate, 1 day cooling The irradiation of each rod was simulated separately using 3 pulses of each intensity with the correct times between them. (Total of ~1.5e13 POT) Then the 12 results were merged together in Flair, then multiplied by 12 to get the 1.84e14 POT

Residual dose rate Using the same method described on the previous slide.

Residual dose rate of one target, 6 months cooling

Residual dose rate of tank

Prompt dose equivalent, Iridium, I = 1.5e12

High energy hadrons, Iridium, I = 1.5e12

Simulation assuming ε = 0.8 rods and internal tank walls We could protect Interferometer head with a low ε material. Results Back-up slide: Heat Removal from the Tank Max Temp wall = 32 C Max Temp Interferometer head = 41 C