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Assay and Acquisition of Radiopure Materials

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consortium [2013/05/29 11:17] – [Available Assay Technology] manitripathiconsortium [2013/12/18 13:12] (current) – prisca
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 ===== Other Resources and Documents ===== ===== Other Resources and Documents =====
  
 +  * {{::assay_strategy.docx|Combined Document}} This includes the Strategy Document as one section in a larger paper that is designed to make our overall case for the consortium.
 +  * {{::assaydocument.docx|Skeleton for Proposal}} Original concept for Document to the Agencies. It draws heavily from the CF1 Screening White Paper.
 +  * {{::dmcommunityassaystrategy-p5.pdf|Strategy Document}} which was sent to P5 on Dec 10, 2013
 +  * {{::dongming_commentsfromandreas_10222013_v2.pdf|Andreas Comments}} to be incorporated in a larger strategy which includes neutrinoless double beta decay.
 +  * {{::dmcommunityassaystrategy-v6pcwithcommentsfrommei.docx|Comments from DongMing}}
   * {{:orrell_aarm_slides_consortium.pdf|Slides shown by John Orrell}} part of the Discussion of Principles   * {{:orrell_aarm_slides_consortium.pdf|Slides shown by John Orrell}} part of the Discussion of Principles
   * {{:dura_lbcf.pdf|Low Background Assay}} Slides shown at the DURA meeting by Prisca - includes introduction to the Consortium concept.   * {{:dura_lbcf.pdf|Low Background Assay}} Slides shown at the DURA meeting by Prisca - includes introduction to the Consortium concept.
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     *  Technical support provided by TUNL and a part-time graduate student.      *  Technical support provided by TUNL and a part-time graduate student. 
     * Samples currently screened at no cost to experiments, however increased demand may change this.     * Samples currently screened at no cost to experiments, however increased demand may change this.
-  * **LBNL** (incl Oroville) (Yeun-dat Chen)+  * **LBNL** (incl Oroville) (Yuen-dat Chen) 
 +    * Surface Site:  HPGe (115% n-type with muon veto), HPGe (p-type), BF3, NAI and existing shielding/low background space for R&D hosting. 
 +    * Oroville Site (600 mwe): HPGe (85% p-type) and large existing shielding for R&D hosting including data transfer and maintenance support. 
   * **UC Davis** (Mani Tripathi)   * **UC Davis** (Mani Tripathi)
     * NAA using TRIGA reactors at Davis (2MW) and Irvine (0.5MW). Davis reactor allows for quick exposures in the reactor core or longer exposures at the periphery of the water tank.  At the Irvine reactor we are deploying a heavy water shielded sample-holder module.  This will provide x10 improvement in the thermal/fast neutron flux ratio.     * NAA using TRIGA reactors at Davis (2MW) and Irvine (0.5MW). Davis reactor allows for quick exposures in the reactor core or longer exposures at the periphery of the water tank.  At the Irvine reactor we are deploying a heavy water shielded sample-holder module.  This will provide x10 improvement in the thermal/fast neutron flux ratio.
     * IC-PMS This facility is owned by another group on campus. We are able to use it on a recharge basis.     * IC-PMS This facility is owned by another group on campus. We are able to use it on a recharge basis.
     * Radon Screening A facility is being developed for use by the LZ collaboration.  Not clear at this point whether there will be time available for other users.     * Radon Screening A facility is being developed for use by the LZ collaboration.  Not clear at this point whether there will be time available for other users.
- 
   * **NAA (Alabama)** (Andreas Piepke)   * **NAA (Alabama)** (Andreas Piepke)
 +  * **SNOLAB** (Ian Lawson)
 +    * 1 PGT coax germanium detector for gamma assaying, sensitivity to energies between 90 and 3000 keV, sensitivity down to 1 mBq for U and Th.
 +      * PGT detector usage, currently about 380 samples (note that the total may not equal 100% due to rounding), as follows:
 +      * Canadian Based Experiments:
 +        * SNO/SNO+   27.8 %
 +        * DEAP       22.4 %
 +        * HALO        1.9 %
 +        * PICASSO     2.4 %
 +      * US Based Experiments:
 +        * MiniCLEAN  15.6 %
 +        * COUPP      10.0 %
 +        * DAMIC       1.1 %
 +        * EXO         1.4 %
 +        * DM-ICE      6.2 % (Non-SNOLAB experiment)
 +      * SNOLAB     11.9 % (Samples which are not for any specific experiment)
 +    * Canberra well germanium detector for gamma assaying, sensitivity to energies between 10 to 600 keV, sensitivity down to 0.2 mBq for U and 0.4 mBq for Th 0.1 mBq for 210Pb.
 +      *  The Canberra well detector is used mostly by SNO+ and DEAP. This will change as smaller samples are counted on this counter instead of on the PGT counter.
 +    * Electrostatic Counters, 11 counters in operation, these are essentially alpha counters, which count the alphas from thorium and uranium decay chains. Sensitivity down to 10^-16 gU/g in the 226Ra chain.
 +        * The ESCs are now mostly used by EXO, although they were originally built to assay the light and heavy water for SNO. Once SNO+ is operational they will again be using the facilities. A small number of samples have been counted for other experiments such as PICASSO and MiniCLEAN.
 +    * Alpha-Beta counters, 8 counters available, these search for alpha-beta coincidences in the U and Th chains, sensitivity down to about 1 mBq.
 +      * The alpha-beta counters have been used mostly by SNO and now SNO+, but are available for other experiments.
 +      * Canberra coax germanium detector, this is currently being refurbished by Canberra France and should be returned to SNOLAB this Fall.
 +    * **Summary:**  In general, the SNOLAB facilities are used by SNOLAB based experiments. Although the facilities are available for non-SNOLAB experiments, only DM-ICE has used the facilities. This is mostly due to the continuous queue of about 10 samples for the PGT detector from the SNOLAB experiments. Once the Canberra coax detector arrives and is setup, then additional samples can be counted and current samples can be counted longer as needed. 
 +  * **Gran Sasso**  (Matthias Laubenstein)
 +    * 10 HPGe detectors owned and operated by INFN.
 +    * 1 HPGe (Gator) operated by XENON, GERDA and DARWIN.  The detector is p-type coaxial, 2.2 kg with sensitivity of ~mBq.  100% usage by XENON and GERDA, envisioned 100% usage by DARWIN.  [[http://arxiv.org/abs/1103.2125v2 | arXiv:  1103.2125v2]]
 +    * Details of operations, costs, etc of the facility are outlined {{lgns_faq.doc|here.}}  
 +  * **Kamioka** (2700 mwe)
 +    *1 HPGe detectors under construction by the KamLAND collaboration.  This detector is expected to be for exclusive use of KamLAND, but they may consider use by other experiments on a case-by-case basis. 
 +    *1 HPGe detectors under construction by the CANDLES collaboration, not available to other users.
 +    *3 Germanium detectors, 2 p-type and 1 n-type, operated by XMASS and SuperK, available for others with preference to XMASS and SuperK
 +    * ICP-MS operated by XMASS and SuperK, available for others with preference to XMASS and SuperK
 +    * API-MS operated by XMASS and SuperK, available for others with preference to XMASS and SuperK
 +    * Many Rn detectors to measure emanation of Rn from materials, operated by XMASS and SuperK, available for others with preference to XMASS and SuperK
 +  * **Japan (Surface)**
 +    * 1 HPGe detector operated by KamLAND, not available for other users.
 +    * 1 HPGe detector operated by CANDLES in Osaka, not available for other users.  Sensitivity is a few mBq/kg for CaF2, relative efficiency is 35%. 
 +  * **Jinping** (Xiang Liu, Zing Zhi)
 +    * 1 HPGe detector operated by PandaX, not available for other users.
 +    * 1 HPGe detector operated by CDEX, not available for other users.
 +      * N type HPGe made by Canberra, relative efficiency :40%
 +      * Detector Sensitivity: 40~2700kev, integral bkg counts rate is about 0.6 cpm; MDA is about mBq/kg for common gamma peak (eg.609keV) from environment nuclides.
 +    * 2 HPGe detectors to be installed by end of 2013.
 +      * Model BE6530 by Canberra
 +      * CDEX will have preference, but 30% availability will be reserved for other users.  
 +  * **LSM, Modane** (Pia Loaiza)
 +    * 12 HPGe detectors, details in attached file {{:detectors_lsm.pdf|(pdf)}}.  The detectors are 100% dedicated to use by SuperNEMO, EDELWEISS and other experiments situated in Modane.  However, Mafalda and Hellaz may be able to do work at the level of 5-10% time for other in the future.
 +  * **Laboratario Subterraneo de Canfranc** (Iulian Bandac, Alessandro Bettini and Yolanda Labarta)
 +    * 5 HPGe detectors installed and operational.
 +    * 2 HPGe detectors to be installed by summer 2013. 
 +    * Details of the detectors in attached file {{hpge_canfranc.pdf|(pdf)}}.  The detectors are currently in 100% usage by LSC experiments. However, they are interested in working with experiments outside of LSC.  
 +    * All detectors are ~2kg, p-type close-end coaxial produced by Canberra.  Each detector has a shield consisting of 5 cm or 10cm copper and 20 cm of very low activity lead.  Nitrogen gas is flushed inside a methacrylate box to avoid airborne radion.  The radon level inside the lab is ~ 80 Bq/m^3.
 ==== Integrated Screening Scheduling ==== ==== Integrated Screening Scheduling ====
   * Creation of a centrally-managed website with all screeners and availability listed   * Creation of a centrally-managed website with all screeners and availability listed
consortium.1369844275.txt.gz · Last modified: 2013/05/29 11:17 by manitripathi

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