Page History

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• NH3/ND3 dewar
• LN2 tub (Vacuum Insulated) (see Fig. 1)
• Large table to place the LN2 tub (see Fig. 2)
• A small table to place the tools
• Target insert (see Fig. 2)
• Target insert holder stand (see Fig. 2)
• Target insert eyebolt (see Fig. 6)
• Target insert transfer rack (see Fig. 4)
• Target insert transfer dewar (see Fig. 5)
• Target insert transfer dewar holder (see Fig. 5)
• Portable handheld dewar with LN2
• Escape pack (OCENCO EEBD) (Request this at MCR (Main Control Room) prior to accessing NM3)

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Figure 1: LN2 tub (Vacuum Insulated).       Figure 2: Target insert with stand in the LN2 tub (side view).  Figure 3: Target insert with stand in the LN2 tub (front view).

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Figure 4: Target insert on the target transfer rack,      Figure 5: Target transfer dewar attached to the target
the bottom of the target insert is in the transfer         insert using the dewar holder.
dewar with the dewar holder attached

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Figure 6: Target insert with the eyebolt attached.

Tools:

• Wrench
• Paper towels
• Crucible tong
• Long tweezer
• Long screwdriver
• Long Q-tip (two shorter Q-tips joined together)
• Funnel
• Target material strainer
• Configuration lock
• LN2 transfer line (1/2”)
• Log survey meter (LSM) or teletector.ds

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1. Bring all the equipment and tools to the work area.
2. Verify that the HVAC in the NM4 target prep area is on.
3. Put the LN2 tub on the table (Fig: 2). Make sure the long side of the table is parallel to the HVAC.
4. Arrange the tools and target material dewar so they are close and easily accessible.
5. Rope off the work area with yellow warning tape.
6. Ensure the caution label is on the LN2 tub edges (see Fig. 1). If the caution label is removed or lost, please stick it on the LN2 tub edges by making a new label from thelabel printer or contact ELO to provide.(Label: CAUTION! DO NOT TOUCH METAL WHEN COLD. MAY CAUSE INSTANT CRYO BURNS.)
7. (Person A) Fill the LN2 tub with LN2 until the level reaches the marked black line (1 inch below maximum, see Fig. 1). Throughout the procedure if the LN2 level drops to below the marked red line (see Fig. 1), we will refill the LN2 back to the marked level. (Hazard: cryogenic, Mitigation: Person A wears a Tyvek suit, cryo-apron, cryo-gloves, unvented goggles, and face shield; Person B stays away about 3 meters from the work area wearing a Tyvek suit, cryo-apron, cryo-gloves, and unvented goggles).

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Figure 1: LN2 tub (Vacuum Insulated).       Figure 2: Target insert with stand in the LN2 tub (side view).

B. Loading The Target Insert

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