HRMT27 1409 "RodTarg“ Technical Board – Feb. 2 nd 2015 Claudio Torregrosa Martin, Marco...

HRMT27 1409 "RodTarg“Technical Board – Feb. 2nd 2015Claudio Torregrosa Martin, Marco Calviani, Antonio Perillo-Marcone, Mark Butcher (EN/STI), Luca Gentini (EN/MME)

EDMS Number: 1471646

HiRadMat27 TB - Proposal 1409 2

Introduction and Goals of HRMT27-RodTarg

February 2nd 2015

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

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 tankBPKG 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

(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 Assembly1. 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

Irradiated target RodsMaterial Total mass [kg]Iridium 0.48Tungsten 0.54W-26Re 0.136W-Lanthanum 0.136Molybdenum 0.1Tantalum 0.117TZM-Alloy 0.1

Total Mass 1.61 kg

Sample HolderMaterial Total mass [kg]

AluminiumAL5083 H116

4.6 kg

Graphite 0.139St. Steel 0.6

Total Mass 5.34 kg

TankMaterial Total mass [kg]

Stainless steel 56.1AluminiumAL6082

1.4

Carbon Fibre 0.68

Total Mass 58.2 kg

Experimental support table

Material Total mass[kg]

Stainless steel

140.8

AluminiumAL6082

13.2

Total Mass 154 kg

• Sample holder: Aluminum• Tank and Experimental

support table: Stainless steel

No melting or vaporization of any of the target materials is

expected

HiRadMat SB - Proposal 1409 update 6

List of Instrumentation & Equipment

October 14-15th 2014

Online Instrumentation at HRTM table

Position

3x Passive interferometer heads

Inside tank2-5 cm from targets

Passive Pyrometer head Inside Vacuum tank15 cm from targets

40 xThermocouples Inside tank, attached to target rods, tank walls and interferometer head

Radiation hard camera Outside the tankVacuum Gauge Outside the tank, at the pump inlet

Equipment at HRTM table PositionMotors 2x in the experiment support table

1x above the tank upper plateLVDT (Linear position sensor) Outside the tankCamera lighting Outside the tankVacuum Pump Outside the tankHEPA Filter Outside the tankRadMon detectors Outside the tankBeam Position Monitor BPKG Outside the tank, upstream

Remote Instrumentation PositionLDV

In the TT61 bunker.Pointing to target surface through TT61-TNC feedthroughs

Remote Equipment PositionInterferometer acquisition system In TT61 bunker. Connected to interferometer

heads through TTC-TNC feed-throughsPyrometer acquisition system In TT61 bunker. Connected to pyrometer head

through TTC-TNC feed-throughsThermocouple acquisition system In TT61 bunker. Connected to thermocouples

through TTC-TNC feed-throughsVacuum gauge acquisition system In TT61 bunker. Connected to vacuum gaugeCamera acquisition system In TNC(TJ7) bunker. Connected to radhard

cameraRadMon Acquisiton System In TNC(TJ7) bunker. Connected to RadMons.Motor control system In BA7 control roomCamera lighting control system In BA7 control roomVacuum Pump control system In 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 fibers100 NE copper wires

To the TNC(TJ7) bunker:1 x camera cable1 x WorldFIP cable for RadMons


Installation Phase


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

HiRadMat SB - Proposal 1409 update 8October 14-15th 2014

Beam Pulse List

IntensityBeam spot [mm]

Bunch spacing

[ns]

Pulse length [us]# bunches p/bunch Total Sigmax

&y1(36x) 36 3.00E+09 1.08E+11 1.5 25 0.92(36x) 36 6.95E+09 2.50E+11 1.5 25 0.93(36x) 36 1.39E+10 5.00E+11 1.5 25 0.94(36x) 36 2.08E+10 7.50E+11 1.5 25 0.95(36x) 36 2.78E+10 1.00E+12 1.5 25 0.96(36x) 36 4.17E+10 1.50E+12 1.5 25 0.9

• Each rod irradiated 3 times for 6 different intensities

• 18 impacts per rod• 216 shots in the whole experiment

(excluding pilot pulses) 1.48*1014 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 1471389

https://edms.cern.ch/document/1471389/1


Operational Phase (2/2)


• 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

1. 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)1. 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

12

Post Irradiation and Disposal (1/2)


(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

13

Risk Analysis (1/2)Risk Analysis during Operation

#

Item Description Hazard Precautions

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 2 4 8

On-line and redundant monitoring of temperature in all the rodsTarget rods coated with high emissivity material in order to increase radiation HT>18 minutes period between two consecutive pulses in the same targetRamped increase of intensity in order to detect unexpected overheating

2 Release of radioactive material

Leakage of radioactive material outside the tank due to fragmentation/vaporization of targets and containment failure

Radioactive contamination of the area

Monitoring of targets temperature to avoid vaporization 1 4 8

Vacuum in the TankHEPA 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 2 3 6

Relatively low intensity pulsesLow density material –Aluminium and graphite- employed for internal structures

*Detailed Risk analysis included in the safety document EDMS no:1471219

February 2nd 2015


14

Risk Analysis (2/2)Risk Analysis during Disposal and PIE

#

Item Description Hazard Precautions

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

2 2 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 radiationIngestion of fragment of targets

R-P58 equipped with under-pressure system

2 4 8

Wearing appropriate PPEEasy-and-fast dismounting designRemote 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

1 4 4

*Detailed Risk analysis included in the safety document EDMS no:1471219

February 2nd 2015


15

Conclusions1. 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


Thanks for your attention

17February 2nd 2015

Back-up Slides


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

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 160025

26

27

28

29

30

31

32

33Maximum Temperature in the Tank Walls

Time [s]

Tem

pere

ture

[C]

12 min6 min

• 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

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 160024

26

28

30

32

34

36

38

40

42

Time [s]

Te

mp

era

ture

[C]

Maximum Temperature Interferometer

6 min 12 min

Max Temp wall = 32 C

Max Temp Interferometer head = 41 C

HRMT27 1409 "RodTarg“ Technical Board – Feb. 2 nd 2015 Claudio Torregrosa Martin, Marco...

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